
    AIG SPECIALTY INSURANCE COMPANY, formerly known as Chartis Specialty Insurance Company, Plaintiff-Appellee v. TESORO CORPORATION, Defendant-Appellant Tesoro Corporation, a Delaware Corporation; Tesoro Refining and Marketing Company, L.L.C., Plaintiffs-Appellants v. AIG Specialty Insurance Company, formerly known as Chartis Specialty Insurance Company, Defendant-Appellee
    No. 15-50953
    United States Court of Appeals, Fifth Circuit.
    Filed November 29, 2016
    
      Stacy R. Obenhaus, Scott Louis Davis, Jason Bryan Heep, Litigation Counsel, Elliot Strader, David Howard Timmins, Gardere Wynne Sewell, L.L.P., Dallas, TX, for Plaintiff-Appellee.
    Allyson Newton Ho, John Clay Sullivan, Morgan, Lewis & Bockius, L.L.P., Dallas, TX, David Sean Cox, Esq., Morgan, Lewis & Bockius, L.L.P., Los Angeles, CA, Joshua Lee Fuchs, Jones Day, Houston, TX, Judd Edwhrd Stone, II, Morgan, Lewis & Bockius, L.L.P., Washington, DC, for Defendant-Appellant, Plaintiffs-Appellants.
    Dustin Mark Howell, Esq., McKool Smith, P.C., Austin, TX, for McKool Smith, P.C.
    Before SMITH, HAYNES, and COSTA, Circuit Judges,
   ORDER:

The petition for panel rehearing filed by Tesoro Corporation and Tesoro Refining and Marketing (collectively, “the Tesoro Parties”) is DENIED. Furthermore, the Tesoro Parties’ belated request that this court certify the question of how the discovery rule applies in light of Cosgrove v. Cade, 468 S.W.3d 32 (Tex. 2015), to the Texas Supreme Court is also DENIED.

The opinion in this case follows clear Texas precedent. However, even if we were to assume arguendo that the discovery rule could apply to a' case such as this, the Tesoro Parties fail to point to evidence that would support a conclusion that, exercising diligence, they should not have discovered their claimed injury before August of 2008 (four years before they asserted the reformation claim and six years after they received the allegedly mistaken policy). See Priester v. JP Morgan Chase Bank, N.A., 708 F.3d 667, 675 (5th Cir. 2013) (explaining discovery rule). Indeed, the Tesoro Parties’ real argument is that they did not discover the alleged mistake not that they could or should not have discovered it had they exercised reasonable diligence. Clearly, any diligence at all would have revealed the alleged mistake, which is obvious in the listing of-Tesoro Corporation as named insured and the definition of “Insured” in the policy. Certainly at some point in the six years between receipt of the policy in 2002 and August 2008, during several years of ongoing litigation where the policy was front and center, someone could and should have looked at the policy. Thus, the issue is not “determinative.” Tex. R. App. Pro. 58.1 
      
      . The Tesoro Parties' argument on diligence is as follows: "The proper inquiry for the district court was to consider when, through the exercise of reasonable diligence, the Teso-ro parties ought to have realized the error in the Chartis policy. And on this point, Chartis’s own behavior demonstrated the existence of a material fact issue. If the district court’s conclusion were an accurate generalization of what any reasonably prudent corporation might have done—to 'examine the Policy and the scope of coverage’ in the dispute—Chartis would have presumably realized, and asserted, the defense that Tesoro Refining is not an insured party when Tesoro Refining first notified Chartis of a potential claim.”
     
      
      . While the Tesoro Parties argue that diligence is usually a fact question, they point to no evidence about their own 'conduct that would raise such a fact issue. See In re Placid. Oil Co., 932 F.2d 394, 398-99 (5th Cir. 1991) ("Even if PGI had no inkling that its rights were being invaded, it was in a circumstance in which a reasonable person would have investigated the situation.”).
     