Santa Fe International Corporation (“Santa Fe”) petitions for a writ of mandamus directing the district court to vacate its order requiring Santa Fe to produce a document for discovery and rejecting Santa Fe’s “common legal interest” attorney-client privilege claim.1 We deny the petition because the district court’s ruling was not clearly and indisputably wrong.
I.
Plaintiffs, who are present and former offshore drilling workers for Santa Fe and *707some twenty-one other offshore drilling corporations, filed this action on August 14, 2000, naming those companies as defendants. The complaint alleges that the defendants secretly met over the past ten years to set, stabilize, maintain, or limit the wages and benefits paid to offshore drilling employees. The plaintiffs seek certification of a class of spch employees, damages for defendants’ alleged antitrust violations, and a permanent injunction to prevent such conduct in the future.
On January 3, 2001, proceedings were held before the district court wherein all defendants, including Santa Fe, were represented by Finis Cowan and David Beck, who said they had been designated as the spokespersons for the defendants. At that hearing the parties presented a joint discovery and case management plan which they recommended to the court. The court accepted the plan with regard to class certification and established the following guidelines for resolving any discovery disputes:
All right. If anything looms as a discovery hassle, don’t file anything. I’m going to be here continuously. Just call Felicia and let her know there’s a problem and I’ll accommodate you with an emergency hearing or a telephone call or whatever will save you expense and inconvenience.
Plaintiffs’ counsel and the spokesperson-attorneys for the defendants indicated their approval and agreement with this expedited discovery dispute resolution procedure.2
On March 8, 2001, Ross Citti, who had enrolled as counsel for Global Marine Drilling Co., scheduled a hearing in accordance with the trial court’s guidelines for discovery disputes. Mr. Citti faxed plaintiffs’ counsel the following letter:
This is to advise you that the Court has scheduled a hearing to resolve outstanding discovery issues in the above matter for 11:00 a.m. on Friday March 9, 2001.
On March 9, 2001, at a discovery hearing in open court, several outstanding discovery issues were resolved pursuant to the March 8 letter of notice issued by Mr. Citti. Mr. Anthony Buzbee and Mr. Richard Melancon appeared for the plaintiffs. Mr. Citti appeared for defendant Global Marine; Mr. Steve Roberts appeared for defendant Nabors Drilling; and Mr. James Watkins appeared for defendant Marine Drilling.
At the discovery hearing, without drawing any objection by the defendants! attorneys, the plaintiffs’ counsel asked the district court to rule on whether the defendants were required to turn over documents that had been withheld, giving as an example a memorandum “which they circulated [in 1994] about their antitrust exposure for doing what they were doing ....”3 Mr. Citti, evidently speaking *708for all of the defendants, informed the court that “there’s basically three categories of documents that have been withheld and we’ve provided them with the privilege log. The first category of documents are correspondence from general counsel to employees of the individual companies.” The court interjected, “That’s privileged.” Mr. Citti continued:
The second category are mainly E-mails and they are discussions between employees and an individual company talking about the memo from the general counsel that they just received.... The third category ... are documents from the general counsel of — we’ll say Global Marine because that is an actual example. General counsel at Global Marine sent an opinion letter to somebody within Global Marine that has to do with the issues that are involved in this case, potential antitrust exposure if you do this and do that and do the other and don’t do the third thing. That letter was then shared with general counsel of another drilling contractor or human relations people who have an interest in this sort of thing. It was done in a confidential way. It was — it was — these memos, communications were done with the understanding that it was legal opinion from general counsel in another company who had a common interest in preserving and staving off litigation of this type.
The district court ruled that the first two categories were privileged and that any attempt to obtain them would be quashed. With respect to the third, however, the court ruled: “I think once the documents albeit the confidential one from general counsel within the company is transmitted to another company, you voluntarily waive any privilege. Then it becomes the precise genesis of antitrust.” The court ordered the production of the third category of documents “for counsel’s eyes only,” and provided for their return after the litigation, without retention of copies or extracted data.4
Contrary to the dissent’s assertion, the district court did not “summarily rule that [the attorney-client] privilege is always waived when documents are transmitted to a third party, thus eradicating any common interest privilege in the face of this circuit’s law to the contrary....” Instead, the district court concluded that documents falling within the third category of communications described by Mr. Citti were not privileged because there had *709been no showing that at the time the communications were made — many years before the present litigation — the employers were potential co-defendants acting under an actual or perceived threat of litigation.5
After the March 9, 2001 discovery hearing, Santa Fe joined defendants Global Marine and Noble Drilling in a motion for reconsideration and clarification of the trial court’s rulings. In this motion, Santa Fe claimed for the first time a “common interest privilege,” and sought protection for its disclosure to third parties of a 1991 memorandum prepared for Santa Fe by its in-house counsel. Santa Fe attached to the motion an affidavit by its in-house counsel that described the 1991 memorandum and its dissemination to other offshore drilling companies, which are now co-defendants with Santa Fe in the present case. In his affidavit, Santa Fe’s counsel averred that:
I have personal knowledge of attorney-client privileged communications between Santa Fe and myself, including a legal memorandum I drafted in May 1991 to Joe Boyd regarding certain legal issues related to the exchange of wage and benefit information among the Big 8 ... as part of my duties as a legal counselor to Santa Fe.... The May 1991 legal memorandum provided legal advice to Santa Fe and was made in furtherance of Santa Fe’s efforts to seek and obtain legal advice on issues in connection with Santa Fe’s participation in wage and benefit surveys.... The May 1991 legal memorandum was circulated to certain members of the Big 8 and the contents of the memorandum were referenced in connection with a meeting of the IPA in 1999.... Santa Fe has maintained ... the May 1991 legal memorandum as confidential. Santa Fe has not disclosed the May 1991 legal memorandum to anyone who did not have a common legal interest with Santa Fe in the communications. Specifically, the participants of the Big 8 and the IPA shared a common interest in complying with the antitrust laws and avoiding any liability in potential litigation for allegedly violating those laws. It was and is my understanding that those companies were all involved in making decisions concerning the guidelines they would adopt for participating together in wage and benefits surveys.
(Paragraph breaks and enumeration omitted).
The district court denied the motion for reconsideration. In responding to Santa Fe’s petition for mandamus, as instructed by this court, the district court explained: “The affidavits submitted by Defendants along with their Motion for Reconsideration do not undermine but rather strengthen the Court’s opinions in this regard. These affidavits further clarify that the Defendants shared the allegedly privileged information years ago, in the absence of any active joint defense of litigation.”6
*710II.
Turning our attention directly to Santa Fe’s claim for protection under the “common legal interest” extension of the attorney-client privilege (“CLI privilege”), we conclude that it has no merit.
A.
A party asserting a privilege exemption from discovery bears the burden of demonstrating its applicability.7 Federal Rule of Civil Procedure 26(b)(5) provides that a party claiming a privilege “shall make the claim expressly and shall describe the nature of the documents, communications, or things not produced or disclosed in a manner that, without revealing information itself privileged or protected, will enable other parties to assess the applicability of the privilege or protection.” In complex litigation, compliance with Rule 26(b)(5) is “usually accomplished by submission of a log identifying documents or other communications by date and by the names of the author(s) and recipient(s), and describing their general subject matter.... ” Manual FOR Complex Litigation (Third) § 21.431 (1995). On January 2, 2001, Santa Fe and the other defendants agreed to produce privilege logs at a future date. While some of the defendants complied with this agreement, Santa Fe failed to provide a privilege log identifying any document or communication.
The only express claim of privilege by Santa Fe came after the discovery hearing in its motion for reconsideration, which sought protection for the dissemination of its in-house counsel’s 1991 memorandum. Thus, the disclosure of the 1991 memorandum to third persons is the only matter before this court on the petition for mandamus. After considering the record and briefs, we conclude that Santa Fe has failed to carry its burden of showing that this communication meets the established criteria for protection under the CLI privilege.
According to our circuit precedents, the two types of communications protected under the CLI privilege are: (1) communications between co-defendants in actual litigation and their counsel; see, e.g., Wilson P. Abraham Constr. Corp. v. Armco Steel Corp., 559 F.2d 250, 253 (5th Cir.1977); and (2) communications between potential co-defendants and their counsel. See Hodges, Grant & Kaufmann v. United States, 768 F.2d 719, 721 (5th Cir.1985); Aiken v. Texas Farm, Bureau Mut. Ins. Co., 151 F.R.D. 621, 624 (E.D.Tx.1993). With respect to the latter category, the term “potential” has not been clearly defined. However, because the privilege is “an obstacle to truthseeking,” it must “be construed narrowly to effectuate necessary consultation between legal advisers and clients.” In re LTV Sec. Litig., 89 F.R.D. 595, 606 (N.D.Tex.1981)(Higginbotham, J.)(citing Garner v. Wolfinbarger, 430 F.2d 1093 (5th Cir.1970)).
*711Considering that caveat, and in looking at other cases discussing the CLI privilege in this circuit, it appears that there must be a palpable threat of litigation at the time of the communication, rather than a mere awareness that one’s questionable conduct might some day result in litigation, before communications between one possible future co-defendant and another, such as the ones here made between one horizontal competitor and another, could qualify for protection. For example, in Wilson P. Abraham Construction Corp. v. Armco Steel Corp., 559 F.2d 250, 253 (5th Cir.1977), this court offered the following discussion of the privilege:
The defendants persuasively argue that in a joint defense of [an actually filed] conspiracy charge, the counsel of each defendant is, in effect, the counsel of all for the purposes of invoking the attorney-client privilege in order to shield mutually shared confidences. We agree, and hold that when information is exchanged between various co-defendants and their attorneys that this exchange is not made for the purpose of allowing unlimited publication and use, but rather, the exchange is made for the limited purpose of assisting in their common cause.
(Emphasis added).
Later, in Hodges, Grant & Kaufmann, this court again discussed the privilege: “The [attorney-client] privilege is not ... waived if a privileged communication is shared with a third person who has a common legal interest with respect to the subject matter of the communication.” 768 F.2d at 721 (citing only Abraham Constr., 559 F.2d at 253) (addressing communications between counsel for co-defendants during litigation). In Hodges, Grant & Kaufmann, the United States sought to discover from the defendant taxpayer a letter containing legal advice written by the defendant’s attorney and addressed to the defendant and another individual. The defendant claimed that the letter was written to both recipients as the attorney’s joint clients. Because the court lacked sufficient evidence to determine (1) whether the co-recipient of the letter was actually a client of the defendant’s attorney at the time the communication was made, and (2) whether both were being represented jointly in a matter at the time the communication was made, it remanded the case to the district court for further fact finding. Id. Thus, Hodges, Grant & Kaufmann does not support Santa Fe’s claim of privilege because the court in that case narrowly construed “common legal interest” as referencing the interest of clients who are jointly-represented at the time of their attorney’s communications to them. In the present case, Santa Fe and the third parties were not co-clients being jointly represented in ongoing litigation at the time the communications were made.
In In re Auclair, 961 F.2d 65, 69 (5th Cir.1992), this court stated that the CLI privilege extends to communications made among persons “who consult an attorney together as a group with common interests seeking common representation.” (Emphasis added). In Auclair, the privilege was found applicable to communications made in the face of imminent litigation involving multiple potential clients who jointly consulted with a single attorney while actively seeking legal representation in connection with a pending grand jury investigation.
Although we are not bound by them, we find two of our district courts’ discussions of the CLI privilege helpful. In Aiken v. Texas Farm Bureau Mutual Insurance Co., 151 F.R.D. 621, 623 (E.D.Tex.1993), the court stated: “The attorney-client privilege is waived if the confidential communication has been disclosed to a third party, unless made to attorneys for co-parties in order to further a joint or com*712mon interest (known as the common interest rule or the joint defense privilege)” (citing Auclair, 961 F.2d at 69). The opinion further explains that:
This privilege encompasses shared communications between various co-defendants, actual or potential, and their attorneys, prompted by threatened or actual, civil or criminal proceedings, to the extent that they concern common issues and are intended to facilitate representation in possible subsequent proceedings, or whenever the communication was made in order to facilitate the rendition of legal services to each of the clients involved in the conference.
Aiken at 624 (emphasis added) (internal quotations and citations omitted).
The plaintiff in Aiken sought discovery of audio tapes containing conversations between various defendants that were recorded after the defendants had been sued by the plaintiff and had signed a joint defense agreement. The court conducted an in camera review of the tapes and found that they were not privileged because the recorded conversations were merely “examples of schmoozing” and “were not intended to, and do not in fact, facilitate representation or the rendition of legal services.” Id. at 624-25 (internal quotations omitted). So, while it was certainly possible in Aiken for the CLI privilege to apply, since the parties asserting the privilege were actual defendants in a lawsuit at the time the communications were made, the court ruled on the merits that the communications were not privileged because they did not meet the basic prerequisites for communications protected by the attorney-client privilege. Once again, there is no support in Aiken for Santa Fe’s position, since the communications in Aiken were made between actual co-defendants in ongoing litigation.
The district court in In re LTV Securities Litigation, 89 F.R.D. 595 (N.D.Tex.1981), opined that:
[Disclosure of privileged information by an attorney to actual or potential co-defendants, or to their counsel, in the course of a joint defense does not constitute a waiver of the attorney-client privilege.
... The privilege is available to corespondents in a grand jury investigation as well as to parties made co-defendants by formal indictment. The privilege also protects from disclosure communications between various co-defendants and their attorneys in a civil proceeding.
Id. at 604 (citations omitted).
In LTV, a private securities fraud case, the plaintiff class of shareholders sought to discover remarks made by the corporation’s counsel in the presence of representatives of the corporation’s financial auditor. At the time the communications were made, both the corporation and its auditor had been served with subpoenas to appear before the SEC as part of an investigation into the corporation’s activities by the agency. In finding the communications protected by the CLI privilege, the court noted that the “[corporation] has established that the joint conferences undertaken with representatives of [its auditor] were confidential, concerned common issues, and were intended to facilitate representation in proceedings involving the SEC.... Both ... were subpoenaed by the SEC before the joint discussions which the class seeks to discover.” Id. The court found that the parties “had a natural and common interest in consulting about the SEC investigation.... ” Id. Because the defendants in LTV had been subpoenaed and targeted in SEC investigatory proceedings at the time the communications *713were made, this case also fails to support Santa Fe’s claim of privilege.
In the present case, Santa Fe admits in the motion for reconsideration it filed in the district court that the communications it claims are protected by the privilege were not made in anticipation of future litigation. Instead, the documents were “circulated for the purpose of ensuring compliance with the antitrust laws and minimizing any potential risk associated with the exchange of wage and benefit information.” Motion for Reconsideration at 3. In sharing the communications, therefore, they sought to avoid conduct that might lead to litigation. They were not preparing for future litigation. Furthermore, Santa Fe denied, in its responses to the plaintiffs’ requests for admissions, that it anticipated or perceived a threat of antitrust litigation against it in May of 1991, when Santa Fe’s senior counsel prepared the memorandum that was distributed to the company’s competitors. Considering that the original complaint in this case was not filed until August 14, 2000, we cannot say that the district court clearly erred in its implicit finding of fact that Santa Fe’s disclosures to third persons of the 1991 memorandum were not made for the purpose of preparing a joint defense to lawsuits based on pre-1991 antitrust law violations.
B.
We also find unpersuasive Santa Fe’s claim that the district court’s ruling will cause it irreparable harm. The petition for mandamus states that the “trial court has made it quite clear that any relief on ... [the privilege issue] is not available in its court.” However, in advancing this argument, Santa Fe plainly misconstrues the March 9 ruling. With respect to Santa Fe’s express claim of privilege, the district court concluded that: (1) Santa Fe’s communications of its in-house counsel’s 1991 internal memorandum to other independently owned offshore drilling corporations were not entitled to protection by the attorney-client privilege per se, because the communications were not made by Santa Fe as a client for the purpose of obtaining legal advice or by an attorney to a client in the rendition of professional services; and (2) Santa Fe failed to demonstrate that its disclosure to third persons of the memorandum Santa Fe received from its in-house counsel fell within the common legal interest doctrine or privilege.
Except for the 1991 memorandum, Santa Fe did not specifically identify any other communication as being privileged. The extraordinary writ of mandamus will not issue to grant Santa Fe’s blanket request for protection of documents and communications not expressly claimed and shown to be privileged. See Nguyen v. Excel Corp., 197 F.3d 200, 206 n. 16 (5th Cir.1999) (“Blanket claims of privilege are disfavored.”); United States v. El Paso Co., 682 F.2d 530, 539 (5th Cir.1982) (“The privilege must be specifically asserted with respect to particular documents.”). However, if Santa Fe hereafter invokes the attorney-client privilege with respect to a particular document or communication, other than the 1991 memorandum, and the district court determines that the privilege has not been waived by reason of delay, bad faith or other conduct, then neither the March 9 ruling nor this order would prevent Santa Fe from properly claiming and demonstrating its entitlement to that privilege.
C.
While we are convinced that a reasonable jurist could not find that the district court made clearly erroneous findings or committed an abuse of discretion, we are even more certain that the imperfections, if any, in the trial court’s rulings do *714not warrant the issuance of mandamus. “It is well-established that the mandamus remedy is a drastic one, to be invoked only in extraordinary situations.” In re First S. Sav. Assoc., 820 F.2d 700, 705 (5th Cir.1987) (internal quotations and citations omitted). The petitioner must have a “clear and indisputable” right to the writ.8 “Thus, for [the petitioner] to establish entitlement to mandamus relief, it must show not only that the district court erred, but that it clearly and indisputably erred.” In re: Occidental Petroleum Corp., 217 F.3d 293, 295 (5th Cir.2000)(emphasis omitted). Because the “common legal interest” privilege is such an amorphous concept, and because this case plainly does not fall within its core, we simply cannot say with such certitude that the trial judge was wrong in this case. In its response, the district court explained its discovery hearing ruling, in pertinent part, as follows:
Here, the lack of any temporal connection to actual or threatened litigation is striking. . Had these Defendants been jointly defending a suit, as opposed to merely discussing concerns, the long elapse of time would not bear so heavily on the Court’s inquiry. But, when the threat of litigation is merely a thought rather than a palpable reality, the joint discussion is more properly characterized as a common business undertaking, which is unprivileged, and certainly not a common legal interest. There is no justification within the reasonable bounds of the attorney-client privilege for horizontal competitors to exchange legal information, which allegedly contains confidences, in the absence of an actual, or imminent, or at least directly foreseeable, lawsuit.
As the district court’s reasons suggest, the record in this case is neither clear nor indisputable with respect to Santa Fe’s motive for sending its in-house counsel’s memorandum to its horizontal offshore drilling competitors. It is possible that the disclosures were made to facilitate future price fixing in violation of the antitrust laws, as the plaintiffs contend.9 Alternatively, the disclosures were perhaps made in the sole interest of preventing future antitrust violations, as the defendants argue in their motion for reconsideration, in which case they hardly could be seen as the commencement of an allied litigation effort. Furthermore, it is difficult to find that the disclosures were made for the purpose of forming a common defense against alleged prior violations of the antitrust laws, in view of Santa Fe’s stout denials that in 1991 it anticipated or perceived a threat of future antitrust litigation.
*715The ambiguity of the record and the cloudiness of the crucial legal concept involved strongly militate in favor of the conclusion that, if the district court erred at all, it certainly was not clearly and indisputably wrong in finding that Santa Fe’s disclosures of its in-house counsel’s memorandum to its horizontal competitors were not communications protected under any attorney-client privilege to which Santa Fe was entitled.
III.
Although Santa Fe’s petition for mandamus should clearly be denied, and the foregoing reasons would normally suffice to explain our ruling, we think it is appropriate in this case to also address and put to rest Santa Fe’s claims that it was denied due process or treated unfairly by the district court.
Santa Fe first contends that it “had no opportunity to be heard on the common interest privilege issue” because its enrolled counsel was not present at the March 9 discovery hearing. Mr. Citti was the only attorney who actually spoke for the defendants during the hearing,10 and the record does not explicitly reflect that he was authorized to speak for all of the defendants. However, a reading of the materials presented in connection with the petition for mandamus reveals that Mr. Citti did represent all of the defendants, and Santa Fe does not expressly contend otherwise. In fact, Santa Fe acknowledges that Mr. Citti acted on the defendants’ behalf in “discussing ... the scheduling of the depositions of the plaintiffs’ experts and the production of the class representatives for deposition.”11 Mr. Citti likewise represented all defendants in objecting to the plaintiffs’ answer to an interrogatory. He even responded to the plaintiffs’ request to take the depositions of CEOs of defendant companies whose enrolled counsel were not present at the hearing. Furthermore, when Mr. Buzbee objected to the failure of the defendants to either produce the requested documents or establish a legal basis for withholding them, he stated that Mr. Citti was there “as a spokesperson” for all of the defendants. Far from rejecting this role, Mr. Citti responded by presenting a categorical argument in favor of the defendants’ privilege claims; he did not limit the scope of his advocacy to fewer than all of the employer-defendants.
In any event, regardless of whether Mr. Citti was implicitly or expressly authorized to protect all of the defendants’ interests at the discovery hearing, Santa Fe was not denied an adequate individual opportunity to present its privilege claim, supporting evidence, and full written argument. Santa Fe fully briefed the district court on the issues and submitted an affidavit as to what its witness would have testified to at an evidentiary hearing.12 The court considered Santa Fe’s brief and affidavit evidence before denying the motion for reconsideration. The district court elaborated on the reasons for its ruling in the response it filed at the direction of this court. Santa Fe does not point to any actual prejudice it sustained because of the nature of the process it was afforded. Santa Fe’s due process argument therefore lacks merit.
Santa Fe also contends that the March 9 hearing was unfair because the plaintiffs did not give formal written notice of the *716oral discovery objections they raised. However, this contention ignores the defendants’ availment of the trial court’s expedited process for resolving discovery disputes, a process agreed to by Santa Fe and all other parties to this litigation.13 Mr. Citti presented the defendants’ objections orally without filing particularized written notice or motions. Thus, under Santa Fe’s view, only the defendants were entitled to the benefits of the court’s streamlined procedure. Neither the record nor simple logic supports this view.
Moreover, the fax which Mr. Citti sent to notify the plaintiffs of the March 9 hearing stated that it had been set to resolve the “outstanding discovery issues”; it did not limit or particularize the discovery issues that could be taken up at the hearing. It is undisputed that Mr. Buz-bee, plaintiffs’ counsel, called Mr. Citti pri- or to the hearing and told him that he would be raising the issue of whether the requested documents withheld by the defendants were privileged. In view of the evidence presented to this court, we conclude that all of the defendants knew or should have known that the CLI privilege issue would be addressed during the hearing. Indeed, the presence of counsel for co-defendants Nabors Drilling and Marine Drilling strongly indicates that all parties were notified of the discovery hearing, and Santa Fe does not claim that it was deprived of actual notice and an opportunity to participate in the hearing.
Finally, the record does not reflect any impropriety on the district court’s part in conducting the March 9 discovery hearing. In considering the issues brought up by both defense and plaintiff counsel, the court simply followed the guidelines which it had established, and to which all of the parties had agreed, for the expedited resolution of discovery disputes without the necessity of filing written motions. Evidently, the participants understood that this was the nature of the proceeding because no one objected to the oral presentation of the discovery issues or to the court’s summary disposition of the disputes without taking further evidence. Thus, there is no merit to Santa Fe’s suggestion that it was treated unfairly by the district court.
IV.
For the foregoing reasons, the petition for a writ of mandamus is DENIED.
. Although the litigation underlying this discovery dispute involves multiple defendants and numerous documents, this mandamus petition concerns only Santa Fe's claim of privilege as to one document created in 1991. See infra at 709-10.
. See generally Fed.R.Civ.P. 16(c)("At any [pretrial] conference under this rule consideration may be given, and the court may take appropriate action, with respect to ... (6) the control and scheduling of discovery, including orders affecting disclosures and discovery pursuant to Rule 26 and Rules 29 through 37; ... (12) the need for adopting special procedures for managing potentially difficult or protracted actions that may involve complex issues, multiple parties, difficult legal questions, or unusual proof problems; (16)such other matters as may facilitate the just, speedy, and inexpensive disposition of the action.”); Fed.R.Civ.P. 23(d).
. Notwithstanding the dissent’s contrary view, the plaintiffs intended to seek discovery of documents at the March 9 hearing, and not merely an in camera review. Therefore, the plaintiffs did not "get more than they were asking for.” Mr. Buzbee asked Mr. Citti the day before the hearing to bring the documents with him so that the judge could look at them if necessary. But the record clearly reflects that, from the beginning, Mr. Buz-*708bee’s obvious, ultimate goal was discovery of the documents. At the hearing, Mr. Buzbee stated: "And the only other issue that I have, Your Honor, if the Court will allow it, is [that] the Defendants just aren't turning over the documents ... with no legal basis for withholding them.” In its petition for mandamus, Santa Fe suggests that the court should have reviewed the defendants' documents in camera. However, it was incumbent on the defendants to ask for an in camera review if they believed the documents, contained critical intrinsic evidence of privilege. They apparently could not represent to the court that the documents contained such features, or perhaps decided, as a matter of strategy, that the court should not view these documents prior to its ruling on class certification, and therefore did not ask for an in camera review.
. The dissent claims that because the plaintiffs did not follow the formalities of the Southern District of Texas Local Rules 7.1 and 7.3, which require opposed motions to be in writing, supported by authority, and filed at least twenty days before submission, the judge's ruling on the plaintiffs' discovery request was erroneous. However, Local Rule 7.8 allows the district court to "in its discretion, on its own motion or upon application, entertain and decide any motion, shorten or extend time periods, and request or permit additional authority or supporting material.” As noted above, the district court had outlined rules for a streamlined discovery dispute process which bypassed the formalities of the local rules and to which all parties, including Santa Fe (through its formal representatives, Mr. Cowan and Mr. Beck), agreed.
. The dissent's argument that the district court was obliged to examine each document before ruling is not meritorious. The argument fails to take into account that the claimants of the attorney-client privilege had the burden of demonstrating that each document withheld was entitled to protection. The defendants did nothing to show that the communications to third persons were made in anticipation of a common defense. On the contrary, the age of the communications, the lack of evidence of any .common defense agreement, and Santa Fe’s answers to plaintiffs’ requests for admissions made a strong case against the common interest privilege claim. See infra at 713.
. Contrary to the dissent’s impression, the district courL cited Fifth Circuit precedents— and not just "caselaw from other circuits”— demonstrating that Santa Fe’s document did not fall within the scope of the common legal interest privilege. See District Court’s Response at 3-4 (citing Wilson P. Abraham Constr. Corp. v. Armco Steel Corp., 559 F.2d 250, 253 (5th Cir.1977); In re Auclair, 961 F.2d 65, 70 (5th Cir.1992); Hodges, Grant & Kaufmann v. United States, 768 F.2d 719, 721 *710(5th Cir.1985)). Those cases recognized the common legal interest privilege, but described its perimeter in a manner that excludes Santa Fe's claim.
. See generally 8 Charles Alan Wright & Richard L. Marcus, Federal Practice and Procedure § 2016.1 (2d ed.1994). See also Hodges, Grant & Kaufmann, 768 F.2d at 721.
Fifth Circuit cases clearly hold that the privilege claimant’s burden extends to proof of preliminary facts showing that the matter is eligible for protection. See, e.g., United States v. Rodriguez, 948 F.2d 914, 916 (5th Cir.1991) ("As to the claimed violation of privilege, [defendant] has never indicated any document from the seized file which constituted a communication or described a communication between herself and her attorney. The burden of establishing privilege rests on the party who invokes it.”).
. Mallard v. United States District Court, 490 U.S. 296, 309, 109 S.Ct. 1814, 104 L.Ed.2d 318 (1989); Will v. Calvert Fire Ins. Co., 437 U.S. 655, 666, 98 S.Ct. 2552, 57 L.Ed.2d 504 (1978). In Kerr v. United States District Court, 426 U.S. 394, 402-03, 96 S.Ct. 2119, 48 L.Ed.2d 725 (1976), the Supreme Court explained:
Our treatment of mandamus within the federal court system as an extraordinary remedy is not without good reason.... [I]n an era of excessively crowded lower court dockets, it is in the interest of the fair and prompt administration of justice to discourage piecemeal litigation. It has been Congress' determination since the Judiciary Act of 1789 that as a general rule "appellate review should be postponed ... until after final judgment has been rendered by the trial courL....” A judicial readiness to issue the writ of mandamus in anything less than an extraordinary situation would run the real risk of defeating the very policies sought to be furthered by that judgment of Congress.
(Citations omitted).
. If so, they would fall outside the scope of any attorney-client privilege as communications made for criminal or fraudulent purposes. In re Burlington Northern, Inc., 822 F.2d 518, 524 (5th Cir.1987).
. Mr. Roberts, the attorney for Nabors Drilling, and Mr. Watkins, the attorney for Marine Drilling, stood silent and thereby indicated their consent to Mr. Citti’s advocacy on their clients' behalf.
. Petition for Writ of Mandamus at 11.
. See supra at 709 (quoting the Declaration of Robert S. Preece, Senior Counsel for Santa Fe).
. See supra note 4.