Appellant/Plaintiff Andrew Wagner filed suit against Appellee/Defendants Daewoo Heavy Industries, Jack Mosler, George Valencia, David O’Dell, Donald Adams, and *1270Kevin Ho,1 alleging that Defendants “entered into a conspiracy to intimidate, harass, punish, and deter” him from testifying before a federal grand jury, in violation of 42 U.S.C. § 1985. The district court granted Defendants’ 12(b)(6) motions to dismiss for failure to state a claim. We vacate the district court’s dismissal and instruct the district court to allow Plaintiff leave to amend his complaint.
BACKGROUND
According to Plaintiffs complaint2, Defendants were engaged in the shipping of heavy machinery to Cuba, in violation of a U.S. trade embargo. When customs officials discovered the illegal shipments, the federal government launched an investigation. Because of Plaintiffs role in arranging transportation for the equipment and filling out required Customs Invoice forms, Defendants were aware that Plaintiff would eventually be a witness, either at grand jury proceedings or at trial.
Plaintiff alleges that Defendants conspired to terminate him from his employment with Daewoo to deter him from testifying. Defendants, Plaintiff says, falsely accused Plaintiff of soliciting bribes from the trucking company owned by defendant Adams; Plaintiff was later fired — before he was to testify — for violating Daewoo work rules. Plaintiff claims that the reasons given for his termination were false and pretextual. Despite the alleged intimidation, Plaintiff eventually testified before a federal grand jury.
Plaintiff then filed this suit, alleging that Defendants had violated 42 U.S.C. § 1985. The district court granted the Defendants’ motions to dismiss for failure to state a claim.
A copy of the complaint is appended to this opinion.
DISCUSSION
1. Defendants’ 12(b)(6) motion
A district court’s dismissal for failure to state a claim under Rule 12(b)(6) is reviewed de novo. All factual allegations in the complaint must be accepted as true,, and all reasonable inferences are construed in the light most favorable to the plaintiff. See Bryant v. Avado Brands, Inc., 187 F.3d 1271, 1273 n. 1 (11th Cir.1999). “A motion to dismiss is only granted when the movant demonstrates beyond doubt that the plaintiff can prove no set of facts in support of his claim which would entitle him to relief.” Harper v. Blockbuster Entm’t Corp., 139 F.3d 1385, 1387 (11th Cir.1998) (internal quotations omitted).
Although a plaintiff is not held to a very high standard in a motion to dismiss for failure to state a claim, some minimal pleading standard does exist. The federal rules require “a short and plain statement of the claim that will give the defendant fair notice of what the plaintiffs claim is and the grounds upon which it rests.” Roe v. Aware Woman Center for Choice, Inc., 253 F.3d 678, 683 (11th Cir.2001) (quoting Conley v. Gibson, 355 U.S. 41, 78 S.Ct. 99, 103, 2 L.Ed.2d 80 (1957)); see also Fed. R.Civ.P. 8(a)(2). “Pleadings must be something more than an ingenious academic exercise in the conceivable.” Marsh *1271v. Butler County, 268 F.3d 1014, 1037 (11th Cir.2001) (en banc) (quoting United States v. Students Challenging Regulatory Ag. Proc., 412 U.S. 669, 93 S.Ct. 2405, 2416, 37 L.Ed.2d 254 (1973)) (internal marks omitted). In addition, unsupported conclusions of law or of mixed law and fact are not sufficient to withstand a dismissal under Rule 12(b)(6). See Marsh, 268 F.3d at 1036 n. 16; see also South Florida Water Mgmt. Dist. v. Montalvo, 84 F.3d 402, 408 n. 10 (11th Cir.1996) (stating, in dicta, that “as a general rule, conclusory allegations and unwarranted deductions of fact are not admitted as true in a motion to dismiss”).
We agree with the district court’s conclusion that Plaintiffs complaint failed to state a claim. Section 1985(2), in relevant part, forbids conspiracies to “deter, by force, intimidation, or theat, any party or witness in any court of the United States from attending such court, or from testifying to any matter pending therein, freely, fully, and truthfully ....” 42 U.S.C. § 1985(2). Section 1985(3) provides that a party injured by such a conspiracy shall have a cause of action against the conspirators. The elements of a claim under Section 1985(2) are: 1) a conspiracy; 2) to deter a witness by force, intimidation or threat from attending or testifying before a United States court; 3) that results in injury to the plaintiff. See, e.g., Chahal v. Paine Webber, Inc., 725 F.2d 20, 23 (2d Cir.1984); see also Morast v. Lance, 807 F.2d 926, 929-30 (11th Cir.1987). Plaintiffs allegations are insufficient to establish — even by inference — the second of the elements.3
Although we accept Plaintiffs complaint is sufficient to state that some kind of conspiracy existed, that showing alone is not enough to allow the complaint to withstand a 12(b)(6) motion. For Plaintiff to plead facts suggesting that he was fired for an undetermined improper reason is not enough; instead, the act Defendants agreed to take must constitute the use of force, intimidation, or threat to deter him from testifying.4
One cannot reasonably infer that, simply by making false allegations against Plaintiff and by firing Plaintiff from his job— before he was to testify — Defendants had entered into a conspiracy to deter (that is, to discourage or to frighten) him from testifying. It is not to be expected that a group of conspirators would act to deter someone from testifying by just cutting off, in advance of his planned testimony, the most significant source of influence that the conspirators have over that person: his job. Firing someone from their job, amid false allegations of wrongdoing, seems as though it, by itself, would likely create animosity towards a former employer, thereby encouraging — not deterring— that fired employee’s testimony against the *1272company. Some details of the events leading to Plaintiffs termination, which support an inference of deterrence, need to be alleged. Cf. Swierkiewicz v. Sorema, N.A., 534 U.S. 506, 122 S.Ct. 992, 152 L.Ed.2d 1 (2002) (concluding that a complaint sufficiently pleaded age and national origin discrimination where “complaint detailed the events leading to [plaintiffs] termination ... and included the ages and nationalities of at least some of the relevant persons involved with his termination” and included allegations that the plaintiffs boss had said that he wanted to “energize” plaintiffs department and allegations that the person replacing plaintiff was less qualified for the job).
In this context, the concept of deterrence must include some indication — made before Plaintiff gave his testimony — that a threat or act of intimidation was related to Plaintiffs planned testimony. Except by use of preventative force5, a person ordinarily does not deter another from acting by simply harming that other person. Instead, a person deters by warning the other person that harm will befall that person if he acts in a certain way: for example, if you testify, you will lose your job. The warning, of course, need not be explicit. In many cases, it would be enough just to let another person know that one does not want that other person to do the thing (testifying, for example) he is planning on doing. Some kind of indication of the object of the deterrence, however, must exist to support an inference of deterrence in a case like this one. In this case, Plaintiff does not allege that a Defendant signaled to him that anyone was worried that Plaintiff was planning to testify. Nor does he allege that some indication was given him to suggest that his termination was related to his planned testimony. What are Plaintiffs grounds for concluding that his firing was to prevent his testimony?
We do not mean to imply that termination of employment cannot be part of an overall scheme to deter. A deterrence claim might stem from an inestimable number of different threats and acts. But, other acts in addition to termination from a job on false grounds need to be alleged, and Plaintiff does not allege such additional acts. Plaintiff never alleges — for example — that a Defendant told him that the bribery allegations would go away if Plaintiff did not testify or that the allegations would be widely reported if he did testify. He also never alleges that a Defendant told him he could have his job back if he did not testify. And the complaint alleges no threats — express or implied — to him of more trouble in the future if he testified. Without allegations along these lines, we cannot reasonably infer from the complaint that Defendants acted to deter Plaintiff from testifying.
Compare the allegations in Plaintiffs complaint to those in McAndrew v. Lockheed Martin Corp., 206 F.3d 1031, 1034 (11th Cir.2000) (en bane) (complaint alleged that supervisor in the defendant *1273company had told plaintiff that “the company was very unhappy with [plaintiffs] decision to testify” and that supervisor had made clear that “it would not be in [plaintiffs] best interest to testify”), and Brever v. Rockwell Int’l Corp., 40 F.3d 1119, 1123-24 (10th Cir.1994) (plaintiffs told not to cooperate with FBI and that whistleblow-ers would be dealt with severely; plaintiffs also subject to unsafe working conditions and then told “[t]hafs what you get for making waves”). Without similar allegations, we cannot infer that Defendants conspired to deter Plaintiff from testifying.
The only statement in Plaintiffs complaint that suggests deterrence is the allegation that “Defendant’s [sic] conspired to terminate [Plaintiffs] employment to intimidate, harass, punish, and deter him from testifying before a federal grand jury .... ” (Complaint ¶ 39). But applying the ordinary rules of pleading, this wholly con-clusory allegation is insufficient to meet even the liberal standard of notice pleading. See Marsh, 268 F.3d at 1036; see also Northern Trust Co. v. Peters, 69 F.3d 123, 129 (7th Cir.1995) (“[C]onclusory statements of law ... are not sufficient to defeat a motion to dismiss for failure to state a claim.”).
II. Plaintiffs Request for Leave to Amend
In his brief, Plaintiff argues that even if we determine his complaint to be insufficient to satisfy the pleading standard, we must still vacate the district court’s dismissal because it was error to dismiss the claim without granting leave to amend. Plaintiff, however, never sought to amend his complaint in the district court, either before or after the motion to dismiss was granted; instead, he merely appealed the district court’s adverse ruling.
In deciding this question, we are bound by our ruling in Bank v. Pitt, 928 F.2d 1108 (11th Cir.1991). In Bank, we decided that “[w]here it appears a more carefully drafted complaint might state a claim upon which relief can be granted,” the district court must give the plaintiff a chance to amend the complaint instead of dismissing it with prejudice. We also ruled that it is reversible error for the district court to fail to do so even where the plaintiff never sought leave to amend in district court. See id. at 1112.
In our view, the cases cited by Defendants, see Long v. Satz, 181 F.3d 1275 (11th Cir.1999) (district court was ruling on an amended complaint; therefore, plaintiff had an opportunity to amend); Burger King Corp. v. Weaver, 169 F.3d 1310 (11th Cir.1999) (dismissal at summary judgment stage); Bankers Ins. Co. v. Florida Residential Prop. & Cas. Joint Under-uniting Ass’n, 137 F.3d 1293 (11th Cir.1998) (dismissal following Rule 12(c) motion for judgment on the pleadings), are distinguishable from this case. In this case, the district court was ruling on a 12(b)(6) motion; and the plaintiff had not taken advantage of the opportunity to amend as of right under Rule 15(a). Moreover, even if we did determine these cases to be directly on point, we would still be obligated to follow the rule of Bank, because each of these cases was decided after Bank. See Walker v. Mortham, 158 F.3d 1177, 1188-89 (11th Cir.1998) (when faced with conflict between two panel decisions, rule in the Eleventh Circuit is that “a panel should look to the line of authority containing the earliest case”). Regardless of how we would resolve this matter if it were presented to us as a matter of first impression, we are bound by our holding in Bank. See In re Dickerson, 222 F.3d 924, 926 (11th Cir.2000) (following circuit *1274precedent despite statement that “were we to decide this issue on a clean slate, we would not so hold”).
Defendants cite our en banc decision in Marsh v. Butler County, 268 F.3d 1014 (11th Cir.2001) (en banc), as compelling a different result. We cannot agree; Marsh is materially different from this case.
In the present appeal, Plaintiff has, in his briefing, expressly attacked the district court’s dismissal on the ground that he ought to have been allowed a chance to amend his complaint before it was dismissed with prejudice; and plaintiff has expressly asked this court to remand to allow an amendment. In contrast, our opinion in Marsh makes no mention of the plaintiffs attacking the dismissal of the complaint on the grounds that plaintiffs ought to have been allowed a chance to amend the complaint before it was dismissed with prejudice. Marsh also makes no mention of the plaintiffs, in their briefs, asking this court to remand to allow amendment.6 A case is not binding precedent for propositions not needed to decide the case. See Tompkins v. United States, 946 F.2d 817, 820 (11th Cir.1991). What we decided in Marsh is that an appellate court — given the arguments presented in that case — is not obligated to grant, sua sponte, a plaintiff leave to amend or to remand for an amendment to be considered. Because this case is like Bank and not like Marsh, we must follow Bank.7
An important caveat to Bank is that the district court need not grant leave to amend where even “a more carefully drafted complaint could not state a claim.” Bank, 928 F.2d at 1112. That caveat, however, does not obviously apply in this case. Here, Plaintiff may be able to plead additional facts to establish the element of deterrence.8
Also relevant to the issue of whether Plaintiff can sufficiently cure his complaint is the district court’s conclusion that Plaintiff could not state a claim under Section 1985(2) because he actually did testify. We disagree with that conclusion. In making its ruling, the district court relied upon the Seventh Circuit’s decision in Rylewicz v. Beaton Servs., Ltd., 888 F.2d 1175 (7th Cir.1989). There, the court based its ruling in part on the requirement that a plaintiff bringing suit under Section *12751985(2) must show that he has been injured by the defendants’ acts. See id. at 1181 (“Plaintiffs have simply not pointed to an injury or deprivation within the scope of Section 1985 ....”). In this case, however, Plaintiff does allege an injury within the scope of section 1985: the loss of his job. In Haddle v. Garrison, 525 U.S. 121, 119 S.Ct. 489, 142 L.Ed.2d 502 (1998), the Supreme Court said that a third party’s interference with an at-will employment relationship could constitute a cognizable harm under Section 1985. See id. at 490. If a conspiracy to induce someone else to fire an at-will employee can constitute injury under Section 1985, then a conspiracy actually to fire someone directly can also constitute injury under Section 1985. See also Brever, 40 F.3d at 1128-29 (finding that plaintiff could still make out deterrence claim despite fact that she actually did testify).
We therefore VACATE the dismissal and REMAND the case, with instructions to allow Plaintiff leave to amend his complaint.9
VACATED AND REMANDED.
. All individual defendants, except Adams and Valencia, are Daewoo executives. Although the complaint does not explicitly identify Valencia's position, it appears from the complaint that he is a Daewoo employee with some supervisory power over Plaintiff. Adams is an official with the company that Daewoo hired to transport the equipment involved in this case and from which Plaintiff was accused of accepting bribes.
. Because this case comes to us on a motion to dismiss, we accept all well-pleaded allegations of Plaintiff's complaint as true.
. We recognize that a plaintiff need not "allege a 'specific fact’ to cover every element or allege ‘with precision’ each element of a claim.” Aware Woman Center for Choice, 253 F.3d at 683. Still, "enough data must be pleaded so that each element of the alleged ... violation can be properly identified.” Id. (quoting Quality Foods v. Latin Am. Agribusiness Dev. Corp., 711 F.2d 989, 995 (11th Cir.1983)).
. The language of section 1985(2) supports a claim for retaliating against someone testifying in a federal proceeding. And, at one point, Plaintiff uses the phrase “to punish” to describe Defendants' acts. But, Plaintiff expressly disavowed a retaliation claim in his response to Defendants’ motions to dismiss. In that response, Plaintiff stated that he was not pursuing a retaliation claim and stressed that his "claim arises solely from Defendants' behavior in attempting to deter him from testifying in a federal grand jury proceeding.” (emphasis added). Plaintiff has asserted no retaliation arguments on appeal.
. In this case, we do not face a situation in which a defendant uses actual physical force (for example, assault, kidnaping, or murder) to prevent a witness from later testifying. Such a situation raises entirely different questions, and we express no opinion on the proper resolution of such a case.
By the way, Plaintiff also does not argue that he was terminated from his job and falsely accused of wrongdoing to affect negatively his credibility and, thereby, make it less likely he would be called to testify. We do not suggest that such an argument could establish a claim under Section 1985(2). We, however, observe that the argument has not been made.
. In Marsh, we wrote that “Plaintiffs ... did not seek to amend the complaint. Even after the district court dismissed their claims, Plaintiffs did not seek to amend the complaint. When Plaintiffs have had ample opportunity to request to amend their complaint, but have failed to do so, nothing compels us to remand to allow them to amend.” Marsh, 268 F.3d at 1035, n. 15. But "general expressions, in every opinion, are to be taken in connection with the case in which those expressions are used.” Cohens v. Virginia, 19 U.S. (6 Wheat.) 264, 399, 5 L.Ed. 257 (1821) (Marshall, C.J.).
. This distinction is confirmed when one examines the briefs and record of Marsh. See, e.g., United States v. Glover, 179 F.3d 1300, 1302 n. 5 (11th Cir.1999) ("[G]iven the lack of clarity about the facts, we have looked at the record before the court in [a previous case], not to contradict the court's opinion, but only to clarify the meaning of its words.”); United States v. Rey, 811 F.2d 1453, 1457 n. 5 (11th Cir.1987) ("A court may take judicial notice of its own records and the records of inferior courts.”).
. Our conclusion is not altered by the fact that Plaintiff has never actually represented-either to us or to the district court — that he possesses such facts. See Bank, 928 F.2d at 1113 n. 8 (stating that appellate court had not even looked at the proposed amended complaint filed on appeal by plaintiffs and writing that "we are not granting [plaintiffs] leave to amend; we are merely saying that the district court should have done so”).
. The district court, in its order, dismissed the complaint against Defendant Ho for failure to prosecute. Plaintiff does not challenge this ruling on appeal, and our decision here does not disturb that ruling.