FILED
United States Court of Appeals
Tenth Circuit
October 14, 2010
PUBLISH Elisabeth A. Shumaker
Clerk of Court
UNITED STATES COURT OF APPEALS
TENTH CIRCUIT
KAREN KOKINS; THE CITY OF
WESTMINSTER, a Colorado
municipality,
Plaintiffs-Appellants,
No. 08-1272
v.
TELEFLEX, INCORPORATED, a
foreign corporation,
Defendant-Appellee.
Appeal from the United States District Court
for the District of Colorado
(D.C. No. 1:06-CV-01018-WDM-KLM)
Scott R. Larson, of Scott R. Larson, P.C., Denver, Colorado, for Plaintiffs-
Appellants.
Laurin D. Quiat (Cory M. Curtis with him on the brief), of Baker & Hostetler
LLP, Denver, Colorado, for Defendant-Appellee.
Before BRISCOE, Chief Judge, TYMKOVICH, and HOLMES, Circuit Judges.
HOLMES, Circuit Judge.
Appellants Karen Kokins and the City of Westminster sued Teleflex in this
products liability action. The jury returned a verdict for Teleflex. Appellants
now ask us to grant them a new trial because they claim that the district court
improperly instructed the jury on two issues. First, Appellants contend that the
district court failed to give the appropriate instruction for determining whether a
product is defectively designed. Second, they allege that the district court erred
by instructing the jury regarding a Colorado statutory presumption of non-
defectiveness. Because we conclude that the district court did not err, we
AFFIRM its entry of judgment for Teleflex.
I. BACKGROUND
Ms. Kokins was employed as a park ranger for the City of Westminster,
Colorado, at the City’s Standley Lake facility. On July 6, 2004, she was on duty
and patrolling the lake by boat when the boat’s steering cable suddenly snapped,
causing the boat to careen sharply and throwing Ms. Kokins overboard. She
sustained serious and lasting injury to her ankle as a result of the accident.
Despite five surgeries, she has not regained normal use of it. Ms. Kokins and the
City brought suit in Colorado state court against Teleflex, the maker and seller of
the steering cable, alleging, inter alia, that the cable was defectively designed and
unreasonably dangerous. Ms. Kokins sought damages in connection with her
injuries. The City sought to recover the amount it had paid Ms. Kokins in
workers’ compensation. Pursuant to 28 U.S.C. § 1441, Teleflex removed the case
to federal district court based on diversity of citizenship.
2
A. Evidence Presented at Trial
The parties agreed that the steering cable snapped because water had
entered its inner core and caused it to rust. 1 But they disagreed about how the
water got there, and whether the cable could have been designed to avoid such
corrosion. This made the design of the cable a critical disputed issue at trial.
Appellants alleged that the cable was defective in two ways. First, they
argued that a design defect allowed water to invade the cable, causing its carbon-
steel core to rust. Appellants’ experts presented evidence of how water entered
the core and contended that grease fittings or O-rings could have sealed gaps in
the cable. Teleflex’s experts responded with evidence that the cable on Ms.
Kokins’s boat was incorrectly installed. Teleflex also pointed out that boat
operators are instructed to regularly grease the cable to prevent water penetration,
and elicited testimony that City employees had failed to undertake this routine
1
In its brief, Teleflex describes the cable as follows:
The steering cable is comprised of two main components: the
inner core assembly and the outer jacket. The inner core
assembly is composed of wire rope, surrounded by a carbon steel
helical cable which is in turn encased in water-proof grease. The
inner core assembly is itself enclosed within the water-proof
outer jacket. The outer jacket is made up of a white polyethylene
sheath, which is surrounded by wire wrap and finally encased in
a black polyethylene sheath.
Aplee. Br. at 3 (citations omitted). Teleflex designed the cable model at issue
in the late 1980s, updating a prior model designed in the early 1960s.
3
maintenance. One Teleflex engineer testified that of the four to five million
cables sold since the early 1960s, none had failed in the manner of the cable
installed in Ms. Kokins’s boat.
Second, Appellants contended that the cable was defective because its inner
core should have been made of stainless steel rather than carbon steel. Stainless
steel was a safer choice, Appellants claimed, because it was less prone to corrode
if water did invade the cable core. Teleflex countered with expert testimony that
carbon steel is preferable because it is stronger than stainless steel. Further,
experts for Teleflex testified that carbon steel expands when it rusts, causing the
cable to stiffen, making the boat more difficult to steer, and alerting the operator
that the cable needs to be replaced. By contrast, stainless steel is subject to
sudden cracking under stress and provides no advance warning that it is
deteriorating.
Altogether the jury heard testimony about the design, use, and installation
of the cable from eight witnesses—a forensic engineer, a mechanical engineer,
two mechanics, a metallurgist, a consultant, a product assurance manager for
Teleflex, and a former Teleflex senior design engineer.
B. Disputes Concerning Jury Instructions
The two disputes forming the basis for this appeal arose when it came time
to instruct the jury. First, the parties disagreed about the proper instruction for
determining whether a product is defectively designed and unreasonably
4
dangerous. Colorado law provides two different tests. Under the “consumer
expectation” test, the jury is instructed to find defectiveness if the plaintiff proves
that a product is dangerous “to an extent beyond that which would be
contemplated by the ordinary consumer who purchases it.” Ortho Pharm. Corp.
v. Heath, 722 P.2d 410, 413 (Colo. 1986) (quoting Restatement (Second) of Torts
§ 402A cmt. I (1965)) (internal quotation marks omitted), overruled on other
grounds by Armentrout v. FMC Corp., 842 P.2d 175 (Colo. 1992). Under the
“risk-benefit” test, the jury is instructed to conclude that a product is
unreasonably dangerous if the plaintiff proves that the risks of a challenged
design outweigh its benefits. Armentrout, 842 P.2d at 182–84. Appellants
submitted instructions proposing that the district court instruct the jury under both
tests, but the district court gave only the risk-benefit instruction.
The second dispute centered on the applicability of Colorado Revised
Statute § 13-21-403(3), which creates a presumption that a product is not
defective once it has been on the market for ten years. Over Appellants’
objections, the district court instructed the jury on the presumption.
The jury returned a verdict for Teleflex and the district court entered
judgment accordingly. Ms. Kokins and the City timely appealed. We have
jurisdiction pursuant to 28 U.S.C. § 1291.
5
II. DISCUSSION
A. Jury Instruction for Defective Design
Appellants first argue that the district court erred when it refused to instruct
the jury on Colorado’s consumer expectation test. We detect no error in the
instruction given by the district court.
1. Standard of Review
“We review the district court’s decision about whether to give a particular
instruction for abuse of discretion.” Martinez v. Caterpillar, Inc., 572 F.3d 1129,
1132 (10th Cir. 2009). “We review the trial court’s conclusions on legal issues de
novo, however, and need not defer to its decisions on questions of law.” City of
Wichita v. U.S. Gypsum Co., 72 F.3d 1491, 1495 (10th Cir. 1996).
In a diversity case like this one, the substance of jury instructions is a
matter of state law. City of Wichita, 72 F.3d at 1494–95; see also Erie R.R. Co. v.
Tompkins, 304 U.S. 64, 77–80 (1938). In such a case, our task is “not to reach
[our] own judgment regarding the substance of the common law, but simply to
ascertain and apply the state law.” Wankier v. Crown Equip. Corp., 353 F.3d 862,
866 (10th Cir. 2003) (quoting Huddleston v. Dwyer, 322 U.S. 232, 236 (1944))
(internal quotation marks omitted). To properly discern the content of state law,
we “must defer to the most recent decisions of the state’s highest court.” Id. Of
course, by the principles of stare decisis, we also are bound by our own prior
interpretations of state law. “[W]hen a panel of this Court has rendered a
6
decision interpreting state law, that interpretation is binding on district courts in
this circuit, and on subsequent panels of this Court, unless an intervening decision
of the state’s highest court has resolved the issue.” Id. (emphasis added).
2. Legal Background
Appellants argue that the district court misapplied Colorado law when it
refused to instruct the jury on both the consumer expectation test and the risk-
benefit test. To grapple with this contention, we must discern the import of
Colorado law.
The guiding case for us is Camacho v. Honda Motor Co., Ltd., 741 P.2d
1240 (Colo. 1987). The plaintiff in Camacho crashed his motorcycle and injured
his legs. He sued Honda, the manufacturer of the motorcycle, alleging that the
vehicle was defectively designed because it lacked steel crash bars that would
have protected his legs and lessened the severity of his injuries. Id. at 1242. The
trial court granted Honda’s motion for summary judgment, applying a form of the
consumer expectation test and concluding that the risk of leg injury was obvious
and foreseeable to any purchaser of a motorcycle. Id. The Colorado Supreme
Court reversed and remanded, holding that the consumer expectation test was
inadequate under these circumstances. “Total reliance upon the hypothetical
ordinary consumer’s contemplation of an obvious danger,” the court reasoned,
“diverts the appropriate focus and may thereby result in a finding that a product is
not defective even though the product may easily have been designed to be much
7
safer at little added expense and no impairment of utility.” Id. at 1246; see also
id. at 1247 n.8.
In reaching this result, the court offered a standard for identifying those
cases where the consumer expectation test would not be sufficient:
[E]xclusive reliance upon consumer expectations is a particularly
inappropriate means of determining whether a product is
unreasonably dangerous . . . where both the unreasonableness of
the danger in the design defect and the efficacy of alternative
designs in achieving a reasonable degree of safety must be
defined primarily by technical, scientific information.
Id. at 1246–47 (citing Ortho Pharm. Corp., 722 P.2d at 414); see also
Armentrout, 842 P.2d at 180–82 (discussing the Camacho standard); White v.
Caterpillar, Inc., 867 P.2d 100, 104–06 (Colo. App. 1993) (applying Camacho to
conclude that the trial court erred by not instructing the jury concerning the risk-
benefit test).
Our court was called upon to apply Camacho in Montag v. Honda Motor
Co. Ltd., 75 F.3d 1414 (10th Cir. 1996). In that case, we rejected Appellants’
claim that the district court had erred by not giving a combination of both
instructions to the jury. “The Colorado Supreme Court,” we stated, “has held that
complex product liability claims involving primarily technical and scientific
information require use of a risk-benefit test rather than a consumer expectations
test.” Id. at 1418–19 (emphasis added).
8
3. Proceedings before the District Court
The district court considered extensive arguments on whether to instruct the
jury in accordance with the consumer expectation test, the risk-benefit test, or
both. Appellants argued that both instructions should be given. On the other
hand, Teleflex urged the district court to instruct the jury only under the risk-
benefit test. Acknowledging that it was a “difficult call,” the court agreed with
Teleflex and decided to give only the risk-benefit instruction. In explaining its
decision the court stated:
I am going to go on the basis of the risk harm instruction only to
avoid jury confusion in a case that seems here to be premised on
an unusual set of circumstances of an alleged design defect
allowing a break to occur in circumstances where the alternative
suggested is much beyond the knowledge of the ordinary
consumer and it is based upon distinctions primarily technical
and scientific, namely whether there is an alternative design of
stainless steel to carbon.
Aplt. App. at 815. Later, the district court explained further that its conclusion
was “based upon what seems to be the mandate that the risk benefit formulation
be used where you are dealing with technical or scientific information beyond the
normal—what would be expected of the normal consumer.” Id. at 866 (emphasis
added). It seems to us that the best interpretation of the statements above is that
the district court held that (1) this case involved primarily technical and scientific
evidence, and (2) it thus was required to give only the risk-benefit instruction.
9
The district court accordingly rejected Appellants’ request to instruct the
jury on both tests and instead gave the following instruction: “A product is
unreasonably dangerous because of a defect in its design if it creates a risk of
harm to persons or property that is not outweighed by the benefits to be achieved
from such design.” Id. at 966.
4. The District Court Did Not Err
On appeal, Appellants seem to contend that two errors underlie the district
court’s failure to give the consumer expectation instruction. First, Appellants
argue that the district court erred “because it excluded the ‘consumer expectation’
test as a possible basis for liability under Colorado law,” Aplt. Opening Br. at 25,
instead instructing the jury on the risk-benefit test and effectively treating the two
tests as mutually exclusive. Second, Appellants contend that the court erred in
concluding that this case involved primarily technical and scientific information:
“An ordinary person can understand, without the benefit of scientific or technical
information, that it is unreasonable to use a material that will rust and corrode in
a marine steering cable . . . . In short, rust is not rocket science.” Id. at 22.
a. Exclusion of the Consumer Expectation Test
We first address Appellants’ argument that the district court erred by
concluding that, once it found that this case involved primarily technical and
scientific information, it was required to give only the risk-benefit instruction. In
support of their allegation of legal error, Appellants hold up Biosera, Inc. v.
10
Forma Scientific, Inc., 941 P.2d 284 (Colo. App. 1996), for the proposition that
“the ‘consumer expectation’ and ‘risk/benefit’ tests are not mutually exclusive;
both tests can be applied in the appropriate circumstances.” Aplt. Opening Br. at
21.
In BioSera, the Colorado Court of Appeals did appear to conclude that the
two tests were not mutually exclusive. The BioSera court stated that “we do not
read Camacho as precluding application of the consumer expectation test in an
appropriate case.” 941 P.2d at 287. “Rather, a court should review each [test] to
determine if it is an appropriate standard for judging the dangerous nature of the
product at issue.” Id. The BioSera court concluded that the trial court did not err
in instructing the jury on both tests. Id. The court reached this result because the
issue before it—whether a health care company’s freezer that stored blood
products was defective because it could be turned off inadvertently by the
slightest pressure on its power switch—did “not” involve “the sort of technical,
scientific information that would render use of the ‘consumer expectation’ test
inappropriate.” Id.
In light of Montag, however, we interpret Colorado law on this question as
follows: where a case is defined primarily by technical and scientific information,
the court must use only the risk-benefit test; it may not use the consumer
expectation test, and it may not use both tests together. See Montag, 75 F.3d at
1419. Appellants seem to acknowledge that we closed the door to their argument
11
in Montag when we held that “claims involving primarily technical and scientific
information require use of a risk-benefit test rather than a consumer expectations
test.” Id. (emphasis added). But Appellants would distinguish or ignore this
precedent, arguing that the “suggestion that Montag somehow ties this Court’s
hands and prevents it from considering the analysis in Biosera . . . is flawed.”
Aplt. Reply Br. at 6 n.2.
To the contrary, it is Appellants’ argument that is flawed; Montag is
controlling law. Appellants are correct to note, see id., that “[t]he decision of an
intermediate appellate state court is a datum for ascertaining state law which is
not to be disregarded by a federal court unless it is convinced by other persuasive
data that the highest court of the state would decide otherwise.” Stickley v. State
Farm Mut. Auto. Ins. Co., 505 F.3d 1070, 1077 (10th Cir. 2007) (quoting West v.
Am. Tel. & Tel. Co., 311 U.S. 223, 237 (1940)) (internal quotation marks
omitted). But, as we stated above, “when a panel of this Court has rendered a
decision interpreting state law, that interpretation is binding on district courts in
this circuit, and on subsequent panels of this Court, unless an intervening decision
of the state’s highest court has resolved the issue.” Wankier, 353 F.3d 866
(emphasis added). Biosera came after Montag; however, the Colorado Court of
Appeals decided Biosera, so it is not an “intervening decision of the state’s
highest court.” Id. (emphasis added). And Colorado’s highest court, the
Colorado Supreme Court, has not offered any intervening guidance—through
12
interpretation of Camacho or otherwise—indicating that a trial court is authorized
to instruct the jury in products liability cases that are defined primarily by
technical and scientific information regarding the consumer expectation test, in
addition to the risk-benefit test. Thus, we appropriately apply Montag here.
Consequently, we conclude that the district court committed no legal error when
it held that it was required to instruct the jury on only the risk-benefit test. 2
b. “Primarily” Technical and Scientific Information
Appellants also contend that the district court erred in instructing the jury
concerning the risk-benefit test in any event because the case does not involve
2
Separately, Appellants contend that the district court committed error
by not instructing on both tests because “the consumer . . . is entitled to the
maximum of protection” under Colorado products liability law. Aplt. Opening
Br. at 24 (quoting Camacho, 741 P.2d at 1246) (internal quotation marks
omitted). In light of this goal, Appellants argue, Colorado courts have “approved
use of the ‘risk/benefit’ test to expand the liability of product manufacturers, not
to restrict it.” Id. (emphasis added). Appellants seem to argue that, in weighing
how to instruct the jury, courts are required to put a thumb on the scale and
choose the instructions that will maximize the likelihood of a plaintiff’s recovery.
Appellants misunderstand Colorado law. Though Camacho justified its
adoption of the risk-benefit test as a way to further the public policy underlying
the doctrine of strict liability in tort, neither that case nor any other suggests that
Colorado courts are guided by a public policy that the consumer should win every
disputed legal issue. To the contrary, several of the very cases cited by
Appellants reversed jury verdicts at the request of the manufacturer. See, e.g.,
Armentrout, 842 P.2d at 183 (holding that the burden is on the consumer, not the
manufacturer, to show that the benefits of a proposed design alternative outweigh
the risks, and remanding for a new trial); Ortho Pharm. Corp., 722 P.2d at
415–16 (remanding for a new trial at the request of a manufacturer because “[t]he
failure of the trial court to give an instruction on the risk-benefit test was
reversible error”).
13
primarily technical and scientific information. In that regard, Appellants assert:
“Although the case does involve some technical and scientific information, an
ordinary person can form reasonable expectations regarding the dangerous risks
posed by the cable and the efficacy of alternative designs.” Aplt. Reply Br. at 11
(emphasis added); see also id. at 7 (“Plaintiffs have never argued that this case
does not involve some technical and scientific information.” (emphasis added)).
We discern no error.
To assess this argument we must look to Colorado cases to see which
products they have deemed to involve primarily technical and scientific
information. We have already reviewed Camacho, in which the Colorado
Supreme Court found that the feasibility of installing leg guards on a motorcycle
was defined primarily by technical and scientific information because
“manufacturers of such complex products as motor vehicles invariably have
greater access than do ordinary consumers to the information necessary to reach
informed decisions concerning the efficacy of potential safety measures.” 741
P.2d at 1247.
In Ortho Pharmaceutical Corp., the direct predecessor to Camacho, the
Colorado Supreme Court found that the dangerousness of an oral contraceptive
was defined primarily by technical and scientific information. 722 P.2d at 414.
The court determined that the plaintiff’s claim that her estrogen dose was too high
could not be resolved without balancing the risks and benefits of the chemical
14
composition of the drug. Id. As three Justices later described it, the Ortho court
reasoned that “[a] consumer of drugs cannot realistically be expected to foresee
dangers in prescribed drugs which even scientists find to be complex and
unpredictable.” Camacho, 741 P.2d at 1251 (Vollack, J., dissenting).
In Armentrout, a crane oiler sued the crane manufacturer to recover for
injuries that he suffered when he was trapped in a pinch point between moving
parts of the crane. See 842 P.2d at 178. In discussing the legal principles
governing design-defect claims in Colorado, the court noted that “[t]he instruction
given by the trial court incorporate[d] the rule that whether a product is
‘unreasonably dangerous’ is to be determined under a risk-benefit analysis.” Id. at
182. See also White, 867 P.2d at 105–06 (holding that the trial court erred by
instructing the jury under the consumer expectation test, “rather than” under the
risk-benefit test, where a truck driver alleged that his gasoline-delivery truck
exploded due to a defectively designed engine).
In light of these cases, we conclude that this case primarily involved
technical and scientific information. In particular, there was testimony of this
sort about the steering cable, its manufacture and design, the measures taken to
keep water from entering its inner core, the possible avenues of entry for water
into the core, and the chemical and physical properties of two different kinds of
steel. Even if this information was not as technical and scientific as the level of
estrogen found in the oral contraceptive at issue in Ortho Pharmaceutical Corp.,
15
it seems that the design of the steering cable was at least as technical and
scientific—if not more so—than the design of a motorcycle without leg guards in
Camacho or the design of a crane with a dangerous pinch point in Armentrout.
Although common knowledge of rust may have aided the jury’s
understanding of the issues, both parties proffered technical and scientific
evidence from various expert witnesses. Indeed, Appellants themselves called as
witnesses two boat mechanics, see Aplt. App. at 159–60, 316–17, a mechanical
engineer, see id. at 219–20, and a forensic engineer and a metallurgist, see id. at
268–69. Appellants’ arguments appear to tacitly acknowledge that the issue for
the jury’s consideration was one of a technical and scientific nature. See Aplt.
Opening Br. at 7 (“Plaintiffs’ experts testified that it would be foreseeable to any
engineer that water would likely enter the carbon steel core in a marine
environment and cause corrosion.” (emphasis added)).
Thus, we hold that the district court did not commit error in determining
that, if it concluded that the case involved primarily technical and scientific
information, then it was required to instruct the jury only in accordance with the
risk-benefit test. Nor do we believe that the district court erred in concluding that
this case involved primarily technical and scientific information.
16
B. Jury Instruction on Presumption of Non-Defectiveness
Appellants’ second contention is that the district court erred by instructing
the jury under Colorado law that a product is presumed not to be defective once it
has been on the market for ten years. We disagree.
1. Standard of Review
As discussed in the context of Appellants’ first argument, we review a
district court’s decision to give a jury instruction for an abuse of discretion.
Martinez, 572 F.3d at 1132. However, “[w]hether a jury was properly instructed
in accord with the applicable law and consistent with matters properly within its
province is a question we review de novo.” Bitler v. A.O. Smith Corp., 400 F.3d
1227, 1240 (10th Cir. 2004). “The determination of the substance of a jury
instruction in a diversity case is a matter of state law . . . .” City of Wichita, 72
F.3d at 1494.
2. Legal Background
At issue here is Colorado Revised Statute § 13-21-403(3), which provides
that, in a products liability case, “[t]en years after a product is first sold for use or
consumption, it shall be rebuttably presumed that the product was not defective
and that the manufacturer or seller thereof was not negligent and that all warnings
and instructions were proper and adequate.”
In 1992, the Colorado Supreme Court held, in Mile Hi Concrete, Inc. v.
Matz, 842 P.2d 198 (Colo. 1992), that it was improper to instruct the jury
17
concerning the presumption of § 13-21-403(3). See Mile Hi, 842 P.2d at 205. In
reaching this conclusion, the court focused on the substantive legal context.
Specifically, it stated:
To establish liability, a plaintiff must prove each element of a
claim for relief by a preponderance of the evidence. A plaintiff
has the burden of persuasion as to the defective condition of a
product. Regardless of whether a product liability action is
grounded in negligence or strict liability, a plaintiff must prove
that the product was defective.
Id. (citation omitted). The court noted that Colorado’s evidence
law—specifically, Colorado Rule of Evidence 301 3—provided that “a
presumption does not shift the burden of persuasion.” Id. It reasoned that “[i]t is
precisely because the plaintiff (the party against whom the presumption is
directed) already has the burden of going forward with evidence in this case [as to
the issue of defect vel non] that an instruction based on the statutory presumption
of section 13-21-403(3) is meaningless.” Id. Under the court’s rationale, “a
plaintiff who has presented sufficient evidence to defeat a motion for a directed
3
The rule states that:
In all civil actions and proceedings not otherwise provided for by
statute or by these rules, a presumption imposes upon the party
against whom it is directed the burden of going forward with
evidence to rebut or meet the presumption, but does not shift to
such party the burden of proof in the sense of the risk of
non-persuasion, which remains throughout the trial upon the
party on whom it was originally cast.
Colo. R. Evid. 301.
18
verdict has necessarily rebutted the presumption of section 13-21-403(3)” and,
consequently, “no reason exists for a trial judge to instruct a jury” on it. 4 Id.
(emphasis added). The court further observed that under Colorado law “[t]he
only effect of the statutory presumption of section 13-21-403(3) is to impose the
burden of going forward on the party against whom it is directed.” Id. at 207. In
this regard, the court specifically noted that “[t]he presumption of section 13-21-
403(3) is not evidence.” 5 Id. at 206.
We followed Mile Hi in Perlmutter v. U.S. Gypsum Co., 4 F.3d 864 (10th
Cir. 1993), affirming the district court’s refusal to instruct the jury under § 13-21-
403(3). “Under Mile-Hi Concrete,” we held, “it is not necessary to instruct the
jury on the presumption contained in section 13-21-403(3) if the plaintiff has
presented evidence sufficient to survive a motion for a directed verdict.” Id. at
4
This interpretation of the effect of the presumption is in accord with
“[t]he most widely followed theory of presumptions,” often referred to as the
“bursting bubble” theory. Tafoya v. Sears Roebuck & Co., 884 F.2d 1330,
1337 n.13 (10th Cir. 1989), overruled on other grounds as recognized by Wagner
v. Case Corp., 33 F.3d 1253, 1257 n.4 (10th Cir. 1994); see 2 Kenneth S. Broun,
McCormick on Evidence § 344 at 508 (6th ed. 2006) (“The most widely followed
theory of presumptions in American law . . . has become known as the Thayer or
‘bursting bubble’ theory . . . .”).
5
Chief Justice Rovira, joined by Justice Vollack, dissented. They
would have held that § 13-21-403(3)’s presumption “does constitute evidence.”
Mile Hi, 842 P.2d at 207 (Rovira, C.J., concurring in part and dissenting in part)
(emphasis added). “So finding would enable this court to give some effect to the
legislature’s action in passing this statute and thereby avoid a finding that the
legislature passed a law which is utterly meaningless and ineffective . . . .” Id.
(citations omitted).
19
875. Further, in Wagner v. Case Corp., 33 F.3d 1253, 1256–57 (10th Cir. 1994),
applying the logic of Mile Hi, we reached a like conclusion regarding another
presumption of section 13-21-403—specifically, a presumption found in section
13-21-403(1)(a)).
In 2003, the Colorado General Assembly amended the statute, adding
section 13-21-403(4), which provides: “In a product liability action in which the
court determines by a preponderance of the evidence that the necessary facts
giving rise to a presumption have been established, the court shall instruct the
jury concerning the presumption.” See 2003 Colo. Session Laws 1289–90
(emphasis added). No Colorado court has yet determined how § 403(4) affects
the holding of Mile Hi.
3. Proceedings before the District Court
Without substantial guidance from the Colorado courts, the district court in
this case was called upon to determine whether section 13-21-403(4) effectively
overruled Mile Hi. Appellants contended that Mile Hi was still controlling;
Teleflex countered that the new statute superceded Mile Hi and effected a
substantive change in Colorado products liability law. After acknowledging the
difficulty of the question, the district court concluded that section 13-21-403(4)
had displaced Mile Hi in favor of a “statutory mandate as a part of those statutes
which enable the product liability actions in Colorado. And [the presumption] is
part of the substantive law of the right to recover in Colorado, and it is a
20
mandated part of that right.” Aplt. App. at 958. Accordingly the district court
instructed the jury as follows:
Presumptions are legal rules based on experience or public
policy. They are established in the law to assist the jury in
determining the truth.
Colorado law provides that if you find that this type of steering
cable was first sold for use or consumption 10 or more years
before plaintiff’s injuries, it is presumed that the steering cable
was not defective. However, the presumption is rebuttable and
you may consider this presumption together with all other
evidence in the case in deciding whether the plaintiff has proved
by a preponderance of the evidence that the steering cable was
defective.
Id. at 967.
4. The District Court Did Not Err
Appellants now contend that the district court erred by instructing the jury
on the presumption. They make two arguments. 6 First, Appellants argue that
presumptions are a matter of procedure, not substance, and thus they are
6
Appellants raised an additional objection to the presumption
instruction before the district court—specifically, that the presumption did not
apply because the particular steering cable at issue here was less than ten years
old. The district court rejected this argument because it interpreted the phrase
“[t]en years after a product is first sold for use or consumption,” Colo. Rev. Stat.
§ 13-21-403(3) (emphasis added), to mean “a type of product and not the
particular product.” Aplt. App. at 960 (emphasis added). Appellants do not raise
this argument on appeal. Accordingly, they have waived (that is, abandoned) it.
See Bronson v. Swensen, 500 F.3d 1099, 1104 (10th Cir. 2007) (“[W]e routinely
have declined to consider arguments that are not raised, or are inadequately
presented, in an appellant’s opening brief.”); accord Krastev v. I.N.S., 292 F.3d
1268, 1280 (9th Cir. 2002) (“Issues not raised on appeal are deemed to be
waived.”).
21
controlled by federal rather than state law. The federal law on this issue,
Appellants claim, can be found in Perlmutter and Wagner, which held that it was
error for a trial court to instruct the jury concerning certain presumptions of
section 13-21-403. Second, if state law does apply, Appellants contend that
section 13-21-403(4) did not undermine Mile Hi’s holding that section 13-21-
403(3) is merely a rebuttable presumption—that disappears from a case if the
plaintiff survives a motion for directed verdict—and, consequently, is not the
appropriate subject of a jury instruction. Teleflex responds that this case is
governed by state law, and contends that when the Colorado General Assembly
added section 13-21-403(4), it overruled Mile Hi and “changed the effect of the
ten-year presumption.” Aplee. Br. at 14. Both of these arguments are legal in
nature, so our review is de novo.
a. State Law Controls
As to the first argument, Appellants are incorrect: the question before us is
governed by state, not federal, law. Our polestar is Federal Rule of Evidence 302,
which provides: “In civil actions and proceedings, the effect of a presumption
respecting a fact which is an element of a claim or defense as to which State law
supplies the rule of decision is determined in accordance with State law.” The
advisory committee elaborated on the rule’s import:
It does not follow . . . that all presumptions in diversity cases are
governed by state law. In each case cited [where state law was
applied], the burden of proof question had to do with a
22
substantive element of the claim or defense. Application of the
state law is called for only when the presumption operates upon
such an element. Accordingly the rule does not apply state law
when the presumption operates upon a lesser aspect of the case,
i.e. “tactical” presumptions.
Fed. R. Evid. 302, advisory committee’s note. In the case at hand, Appellants
contend that under Rule 302 the district court was required to apply federal law
because the presumption is procedural rather than substantive. Teleflex responds
that state law provides the rule of decision here because “[t]he presumption at
issue affects the core element of Plaintiffs’ claim and Teleflex’ defense: whether
the cable was defective.” Aplee. Br. at 16. Teleflex is correct.
The presumption of section 13-21-403(3) operates with regard to the key
substantive issue of defect vel non. The Colorado Supreme Court in Mile Hi
clearly recognized this. In particular, the court understood that when section 13-
21-403(3)’s presumption was given its ordinary effect under Colorado law, its
application to the substantive question of defect rendered an instruction
concerning the presumption “meaningless.” 842 P.2d at 205. Under Colorado
Rule of Evidence 301, section 13-21-403(3)’s presumption did not alter the
substantive law’s allocation of the burden of proof. Id. And, under Colorado’s
substantive products liability law, plaintiff had the burden of going forward on
the defect question. Id. Consequently, the Mile Hi court reasoned that, once the
plaintiff had introduced sufficient evidence concerning the defect issue to survive
a directed verdict, section 13-21-403(3)’s rebuttable presumption concerning the
23
absence of a defect was “necessarily rebutted” and the presumption no longer had
any meaningful role to play. Id. (emphasis added).
Therefore, it is patent from Mile Hi’s analysis itself that section 13-21-
403(3)’s presumption operates with respect to “an element of a claim or defense
as to which State law supplies the rule of decision” and, accordingly, the effect of
that presumption must be “determined in accordance with State law.” 7 Fed. R.
Evid. 302. 8
7
The Mile Hi court’s ultimate conclusion that “[a]n instruction based
on the statutory presumption of section 13-21-403(3) should not be given when
there is evidence to the contrary” turned in part on its view that under (extant)
Colorado law “[t]he presumption of section 13-21-403(3) is not evidence” and
that “[t]he only effect of the statutory presumption of section 13-21-403(3) is to
impose the burden of going forward on the party against whom it is directed.”
842 P.2d at 206–07. We conclude infra that, in enacting section 13-21-403(4), in
all material respects, the Colorado legislature overruled that view, turning section
13-21-403(3)’s presumption under certain conditions into a matter for
consideration by the jury along with traditional forms of evidence. That
conclusion, however, has no impact on our analysis here. Whether section 13-21-
403(3)’s presumption is viewed as a tool for ordering the presentation of proof
concerning the issue of defect or as substantive proof concerning that issue, it is
clear that the presumption operates with regard to “an element of a claim or
defense as to which State law supplies the rule of decision,” Fed. R. Evid.
302—i.e., the element of defect in a products liability action—and, accordingly,
state law must control our disposition here.
8
Furthermore, our conclusion concerning the operation of section
13-21-403(3)’s presumption also finds support in the nature of the presumption
itself. This presumption cannot be characterized as involving “procedural”
tactical matters that “do not express a state’s policy toward its litigants.” 1 Jack
B. Weinstein & Margaret A. Berger, Weinstein’s Federal Evidence § 302.02[2][b]
at 302-6 (Joseph M. Laughlin ed., 2d ed. 2010) (noting as an example of a
procedural or tactical presumption, “the presumption establishing the receipt of a
mailed letter,” which “operates tactically as a rule of convenience”); see Fed. R.
(continued...)
24
Appellants’ arguments to the contrary are misguided and unavailing. Their
reliance on Perlmutter and Wagner to support the view that federal law provides
the rule of decision here concerning the effect of section 13-21-403(3)’s
presumption is misplaced. These cases are certainly federal law in the sense that
they are decisions of our court. However, in both Perlmutter and Wagner, we
were interpreting state law in the diversity context, not independently applying
federal law. It was only through that diversity lens that we determined that
Colorado law, which at the time was defined by Mile Hi, did not permit the jury
to be instructed on certain section 13-21-403 presumptions, including the one
embodied in section 13-21-403(3). As we discuss infra, to the extent that
Colorado’s law has shifted direction on this instructional issue, we are obliged in
the diversity context to follow suit.
Furthermore, Appellants’ assertion that “[t]he decision of a federal court as
to whether to give or refuse a tendered jury instruction . . . is governed by federal
law and rules,” Aplt. Opening Br. at 28-29, is true. But it also is irrelevant. The
8
(...continued)
Evid. 302, advisory committee’s note. Instead, it is evident on its face that
section 13-21-403(3)’s presumption expresses a state public policy against
consumer recovery where a product has been on the market for a substantial
period of time. Accordingly, in view of its “substantive policy” nature, we
reasonably may conclude that section 13-21-403(3)’s presumption is the kind of
presumption that Rule 302’s drafters contemplated would fall within its scope.
Weinstein & Berger, supra, § 302.02[2][a] at 302-5; see id. at 302-6 (suggesting
that state law should apply under Rule 302 where a statute “effectuated a state
policy favoring the plaintiff or the defendant in the particular situation
involved”).
25
question before us is not whether the district court properly exercised its
discretion in “[t]he admission or exclusion of a particular jury instruction.” City
of Wichita, 72 F.3d at 1495. Instead, the focus of the inquiry is whether the
district court was authorized as a matter of law to instruct the jury concerning
section 13-21-403(3)’s presumption. And the resolution of that inquiry
principally turns on the legal effect that should be accorded to the presumption—a
matter within the purview of Federal Rule of Evidence 302. Therefore,
Appellants’ attempt to frame the issue for decision as a question of federal law on
the grounds that it relates to giving (or refusing) a particular tendered instruction
is misguided.
In sum, guided by Federal Rule of Evidence 302, we are confident that state
law controls our assessment of whether the district court erred in instructing the
jury concerning section 13-21-403(3)’s presumption.
b. Interpretation of State Law
To address Appellants’ second argument, we must determine whether
section 13-21-403(4) had a substantive effect on the nature of the presumption of
section 13-21-403(3). See 1 Jack B. Weinstein & Margaret A. Berger,
Weinstein’s Federal Evidence § 302.04[1] at 302-9 (Joseph M. Laughlin ed., 2d
ed. 2010) (“[O]nce it is determined that a state presumption must be applied under
Rule 302, the court must give the presumption the same effect it would be given
under state law.”). Appellants essentially contend that it had no substantive
26
impact on section 13-21-403(3)’s presumption and, more specifically, that section
13-21-403(4) does not undermine Mile Hi’s holding that the “only effect” of
section 13-21-403(3)’s presumption is “to impose the burden of going forward on
the party against whom it is directed” and that the presumption is intended to
disappear once a plaintiff meets that burden. Mile Hi, 842 P.2d at 207. To
support their argument, Appellants point out that the Colorado General Assembly
did not remove from section 13-21-403(3) the language providing that the
presumption is “rebuttable.” Aplt. Reply Br. at 17. They also argue that the
Colorado Supreme Court’s 2009 decision in Krueger v. Ary, 205 P.3d 1150 (Colo.
2009), “confirms that [the Tenth Circuit’s] interpretation of Colorado’s rebuttable
presumptions in Wagner and Perlmutter was correct.” Id. at 18. Teleflex
counters that “there can be no doubt that the statutory amendment was intended
by the legislature to change how the presumption operated at trial.” Aplee. Br. at
15. As a result, Teleflex reasons, Perlmutter and Wagner “are no longer good law
in Colorado,” id. at 17, and the Tenth Circuit must reassess Colorado law.
As we noted above, in diversity cases our task is “simply to ascertain and
apply the state law.” Wankier, 353 F.3d at 866 (quoting Huddleston, 322 U.S. at
236) (internal quotation marks omitted). “It is axiomatic that state courts are the
final arbiters of state law.” United States v. DeGasso, 369 F.3d 1139, 1145 (10th
Cir. 2004). But here there are no relevant Colorado decisions interpreting section
27
13-21-403(4), so we “must attempt to predict what the state’s highest court would
do.” Wankier, 353 F.3d at 866.
As we are sitting in diversity and construing a Colorado statute,
we must give it the meaning it would have in the Colorado
courts. “To accomplish this objective, this court must begin with
the plain language of the statute. If the statute is unambiguous
and does not conflict with other statutory provisions, we need
look no further.”
Parish Oil Co., Inc. v. Dillon Companies, Inc., 523 F.3d 1244, 1248 (10th Cir.
2008) (quoting People v. Luther, 58 P.3d 1013, 1015 (Colo. 2002)) (brackets and
citations omitted). “In construing statutes, our primary duty is to give full effect
to the intent of the General Assembly. . . . [T]he statute should be construed as
written since it may be presumed that the General Assembly meant what it clearly
said.” Colo. Water Conservation Bd. v. Upper Gunnison River Water
Conservancy Dist., 109 P.3d 585, 593 (Colo. 2005) (citations and internal
quotation marks omitted). “[W]e may consider the textual context; the statute’s
legislative history; the state of the law prior to the legislative enactment; the
problem addressed by the legislation; and the relationship between the particular
legislation and other relevant legislative provisions in an effort to discern the
legislative intent.” Colby v. Progressive Cas. Ins. Co., 928 P.2d 1298, 1302
(Colo. 1996) (citations omitted); see also Mile Hi, 842 P.2d at 207–08 (Rovira,
C.J., concurring in part and dissenting in part) (collecting cases on statutory
interpretation).
28
Section 13-21-403(4) states that “[i]n a product liability action in which the
court determines by a preponderance of the evidence that the necessary facts
giving rise to a presumption have been established, the court shall instruct the
jury concerning the presumption.” Colo. Rev. Stat. § 13-21-403(4) (emphasis
added). This plain text indicates that the Colorado General Assembly sought to
make clear that, once a showing by a preponderance has been made concerning
the facts giving rise to section 13-21-403(3)’s presumption, an instruction
regarding the presumption must be given.
In the face of this plain language, Appellants would have us believe that
“[t]he General Assembly’s decision to statutorily require a jury instruction
reflects nothing more than a legislative determination that, procedurally, a jury
instruction on the presumption will not be confusing to the jury.” Aplt. Reply Br.
at 16. Setting to one side the observation that this statement seems to concede
that the district court here was permitted—though not obliged—to instruct the
jury on section 13-21-403(3)’s presumption, such a reading of section 13-21-
403(4) would require us to assume that the Colorado General Assembly passed a
superfluous statute—one with a mandatory directive that the General Assembly
did not intend to be mandatorily implemented. That would be an absurd
interpretation. For us to indulge it, we would have to abandon “our primary duty
. . . to give full effect to the intent of the General Assembly,” Colo. Water
Conservation Bd., 109 P.3d at 593, ignore our obligation to consider “the state of
29
the law prior to the legislative enactment,” Charnes v. Boom, 766 P.2d 665, 667
(Colo. 1988), and forget that we should consider a statute’s “textual context,”
Krieg v. Prudential Property & Cas. Ins. Co., 686 P.2d 1331, 1335 (Colo. 1984).
Furthermore, Appellants’ suggestion that section 13-21-403(4) merely had
a procedural effect on the nature of section 13-21-403(3)’s presumption is
misguided. Before the amendment, the presumption operated as a procedural tool
for ordering proof—the presumption required a finding in favor of non-
defectiveness until some credible evidence rebutted that presumption, at which
time the presumption disappeared. In the absence of rebuttal, the plaintiff had not
met the burden of going forward and a directed verdict was appropriate. See Mile
Hi, 842 P.2d at 204–07; see also Beaver v. Fid. Life Ass’n, 313 F.2d 111, 113
(1963) (discussing the category of presumption that functions “as a procedural
tool for ordering proof”); cf. Krueger, 205 P.3d at 1154–56 (discussing rebuttable
presumptions as tools for burden shifting). See generally 2 Kenneth S. Broun,
McCormick on Evidence § 344 at 506-22 (6th ed. 2006) (discussing the
procedural effect of presumptions in civil cases). As a consequence of the 2003
amendment, which introduced section 13-21-403(4), the presumption of section
13-21-403(3) is now accorded substantive effect in the case; it is to be considered
by the jury along with traditional forms of evidence, so long as the trial court
determines by a preponderance of the evidence that the necessary facts giving rise
to the presumption have been established. See Colo. Rev. Stat. § 13-21-403(4);
30
see also Beaver, 313 F.2d at 113 (applying Kansas law and noting the judicial
category of presumption that operates “as a rule of affirmative evidence, which
persists to sustain the burden of proving” the presumed fact “until outweighed by
the preponderance of the evidence” of the non-existence of that fact, “i.e., it is to
be considered as evidence against evidence” (emphasis added)); Broun, supra,
§ 344 at 513 (noting that “[a]nother solution . . . is to instruct the jury that the
presumption is ‘evidence,’ to be weighed and considered with the testimony in the
case”). Therefore, in enacting section 13-21-403(4), the Colorado General
Assembly effectively overruled Mile Hi’s interpretation of the “effect” of section
13-21-403(3)’s presumption as being “only” to “impose the burden of going
forward on the party against whom it is directed.” Mile Hi, 842 P.2d at 207.
And, consequently, our cases that adopted Mile Hi’s interpretation—viz.
Perlmutter and Wagner—no longer accurately reflect Colorado law.
To be sure, as Appellants note, the Colorado General Assembly did not
remove the word “rebuttable” from section 13-21-403(3). But the General
Assembly’s deliberate choice—and we must assume that its choice was deliberate,
see, e.g., Stumph v. Colo. Dep’t of Revenue, 231 P.3d 1, 3 (Colo. App. 2009)—to
leave the word in the statute does not mean that section 13-21-403(4) is window
dressing. The continuing presence of the word “rebuttable” can be explained
readily as an attempt to clarify that the jury is still permitted to conclude that a
product is defective, even when the presumption is in force. In other words, it
31
indicates that section 13-21-403(3) does not embody a “conclusive presumption.”
See Colby, 928 P.2d at 1308–09 (Scott, J., dissenting) (noting conclusive
presumptions in the Colorado code); see also Broun, supra, § 344 at 513 (noting
“the danger that the jury may infer that the presumption is conclusive”).
Further, Appellants offer no reason to think that our reading of the statute
is erroneous. To the contrary, all indications from Colorado law suggest that we
are on the right path. In Krueger—the key case relied upon by Appellants—the
Colorado Supreme Court “h[e]ld [that] the rebuttable presumptions of undue
influence and unfairness do not continue in a case after they are sufficiently
rebutted” and, therefore, that plaintiff’s “requested instructions—which inform
the jury of the presumptions and require the jury to consider the presumptions in
conjunction with all the other evidence to determine whether [the defendant]
unduly influenced [the decedent]—are improper.” 205 P.3d at 1153, 1156. The
court in Krueger, however, expressly noted that its discussion of presumptions
only covered the “general rule.” Id. at 1154. Krueger does not foreclose the
possibility that some “rebuttable presumptions” do not follow the “general rule.”
205 P.3d at 1154. And Krueger recognized, of course, that “[a] trial court is
obligated to correctly instruct the jury on the law applicable to the case.” Id. at
1157 (quoting Jordan v. Bogner, 844 P.2d 664, 667 (Colo. 1993)) (internal
quotation marks omitted). Neither Krueger nor any other case of which we are
aware suggests that the Colorado General Assembly is somehow barred from
32
creating a presumption with substantive effect. Cf. Ravin v. Gambrell, 788 P.2d
817, 822 (Colo. 1990) (“Our prior decisions have made clear that when a plaintiff
introduces sufficient evidence to establish the presumption of negligence
embodied in the doctrine of res ipsa loquitur, the trial court must instruct the jury
as to the nature and effect of that doctrine.” (emphasis added)); Tafoya, 884 F.2d
at 1336 (noting that “the status and strength of a rebuttable presumption vary
according to the force of the policies which motivate a court or a legislature to
create it”). And we believe that the General Assembly has done just that by
enacting section 13-21-403(4).
In sum, we think it clear that, in adding section 13-21-403(4), the Colorado
General Assembly said what it meant and meant what it said: “[i]n a product
liability action in which the court determines by a preponderance of the evidence
that the necessary facts giving rise to a presumption have been established, the
court shall instruct the jury concerning the presumption.” Colo. Rev. Stat. § 13-
21-403(4) (emphasis added). Properly instructed, the jury may consider this
presumption along with traditional forms of evidence in the case. This is
precisely the conclusion that the district court reached here.
III. CONCLUSION
For the foregoing reasons, we reject Appellants’ contentions of
instructional error. In our view, the district court properly instructed the jury.
Accordingly, we AFFIRM the judgment for Teleflex.
33