2017-2020 06-28-2018 IMPAX LABORATORIES INC., AstraZeneca AB, AstraZeneca UK Limited, Plaintiffs-Appellees v. LANNETT HOLDINGS INC., Lannett Company Inc., Defendants-Appellants James F. Hurst, Kirkland & Ellis LLP, Chicago, IL, argued for plaintiffs-appellees. Also represented by Marcus Edward Sernel. Joseph F. Posillico, Fox Rothschild, LLP, Philadelphia, PA, argued for defendants-appellants. Also represented by Frank T. Carroll ; Michael W. Glynn, New York, NY. Lourie, Circuit Judge. James F. Hurst
(a) PATENT APPLICANT.-An applicant for a patent, any of whose claims has been twice rejected, may appeal from the decision of the primary examiner to the Patent Trial and Appeal Board, having once paid the fee for such appeal. (b) PATENT OWNER.-A patent owner in a reexamination may appeal from the final rejection of any claim by the primary examiner to the Patent Trial and Appeal Board, having once paid the fee for such appeal. 35 U.S.C. § 134 July 19, 1952, ch. 950, 66 Stat. 801; Pub. L. 98-622