Freshub, Ltd. and United States subsidiary Freshub, Inc. (together, Freshub) sued Amazon.com, Inc. and several of its subsidiaries (together, Amazon) in the Western Dis- trict of Texas, asserting infringement of Freshub’s patents on voice-processing technology, including U.S. Patent No. 9,908,153 . As relevant here, Amazon denied infringement and also asserted, as a defense, that the patent should be declared unenforceable based on inequitable conduct as- sertedly committed by Freshub’s parent company, Ikan Holdings LLC, in the Patent and Trademark Office—spe- cifically, in its successful petition to revive the earlier- abandoned U.S. Patent Application No. 11/301,291, from which all of Freshub’s asserted patents descend. A jury found that Amazon did not infringe the asserted claims of Freshub’s three asserted patents, while rejecting Amazon’s invalidity challenge—specifically, invalidity for lack of ad- equate written description. J.A. 6–14. The district court later denied Freshub’s post-trial motions challenging the verdict. Freshub, Inc. v. Amazon.com Inc., 576 F. Supp. 3d 458 , 461 (W.D. Tex. 2021) (Post-Trial Opinion). Between the jury trial and th