Jonathan Irvin Tietz

Let me dig into the specific tracked cases and outcomes.

Let me verify a few more details on the remaining matters.

Jonathan Irvin Tietz — Patent Litigation Practice Summary

Mr. Tietz is an appellate and patent-litigation counsel at Perkins Coie (now operating as Ashurst Perkins Coie following the firm's 2025 combination), based in Washington, D.C. His practice is concentrated in Federal Circuit and Supreme Court appeals, dispositive and claim-construction motions, PTAB proceedings, and issues-and-appeals support at trial. His docket skews toward computer, mobile/wireless, and networking technologies — the Wildseed Mobile matters concern SMS/MMS "hot links," cellular ad targeting, and venue/event recommendation patents — with a secondary pharmaceutical/biotech track reflected in Hatch-Waxman/ANDA work (Otsuka v. Mylan, N.D. W. Va.) and in IPR petitions against Genentech/Roche/AbbVie antibody patents. He also carries chemical and mechanical subject-matter experience grounded in his chemistry doctorate, and handles trade secret and contract matters.

Side profile. The tracked appearances (3 plaintiff/petitioner-side, 1 defendant-side) are consistent with a petitioner-and-patent-owner practice rather than a pure defense practice. He has repeatedly represented Google as IPR petitioner and Federal Circuit appellant against Wildseed Mobile, and he represented patent owner AG 18, LLC as appellee in the DraftKings IPR appeals — i.e., he works both the challenger and the patent-owner side. He has also appeared for Dr. Reddy's Laboratories as IPR petitioner against Genentech/Roche/AbbVie. This is not a NPE-focused prosecution practice; it is a mixed challenger/patent-owner appellate practice for operating companies and patent holders.

Firm and credentials. He joined Perkins Coie after clerking for Judge Sharon Prost of the U.S. Court of Appeals for the Federal Circuit, and after a brief associate stint at Foley & Lardner (2019–2020). Perkins Coie announced his promotion to counsel effective January 1, 2026. He holds a J.D. from the University of Michigan Law School (2019; summa cum laude, Order of the Coif, Michigan Law Review) and a Ph.D. in chemistry from the University of Illinois at Urbana-Champaign (2016). He is admitted in D.C. and Virginia, registered with the USPTO (Reg. No. 76,753), and admitted to the Supreme Court, the Federal Circuit, the Seventh and D.C. Circuits, and the E.D. and W.D. of Virginia.

Notable matters and PTAB/IPR. He appears regularly before the PTAB and on Federal Circuit appeals. Verifiable results: in Google LLC v. Wildseed Mobile, LLC, No. 24-2178 (Fed. Cir. Feb. 13, 2026), he was on Google's appellate team in a decision vacating and remanding the Board's finding that claim 15 of U.S. Pat. No. 10,869,169 survived IPR, with costs taxed to Google as appellant; in Wildseed Mobile, LLC v. Google LLC, No. 24-1846 (Fed. Cir. Apr. 30, 2026), the court affirmed the Board's obviousness rulings against Wildseed's U.S. Pat. No. 7,376,414. In the AG 18/DraftKings appeals (Nos. 24-2078 and 24-1821, Fed. Cir. 2026) he argued for appellee AG 18; the Federal Circuit affirmed the PTAB's refusal to consider DraftKings' late-raised invalidity ground, preserving claim 18 of U.S. Pat. No. 9,978,205. He also appeared at the January 2024 oral hearing in Dr. Reddy's Laboratories v. Genentech/Roche/AbbVie, IPR2023-00052, and is listed as counsel for Google in Impact Engine, Inc. v. Google LLC (Fed. Cir. 22-2291) and in the successful opposition to certiorari in EscapeX IP, LLC v. Google LLC. Some of his other tracked appearances are docket-level entries without a published opinion, so results for those matters are not independently confirmable from public sources.