Calmann J. Clements

I'll research this attorney before drafting.

Calmann J. Clements — Patent Litigation Practice Summary

Focus and technology areas. Clements is a patent attorney at Haynes Boone whose practice centers on invalidity strategy and post-grant practice at the PTAB — inter partes reviews, post-grant reviews, and ex parte reexaminations — together with supporting district court litigation, licensing, and patent prosecution/counseling work. His firm biography describes technical coverage across computer hardware and memory systems, networking and transport protocols, telecommunications, audio/video codecs, semiconductor fabrication, software, cloud/virtualization, and medical devices such as surgical and imaging systems; his practice pages also list autonomous transportation and vehicle electrification. His tracked matters are consistent with that profile: the asserted patents in his PTAB cases involve video/audio encoding and serial-link transmission (General Video), mobile media tagging and speech/image recognition (MyPort), and mobile advertising and networking (Wildseed Mobile). He has an electrical engineering background, which he cites as the basis for his invalidity and patentability work. He is listed on the firm's related practices for patent prosecution and counseling as well as IP litigation.

PTAB/IPR experience. This is the core of his practice and is unusually deep: his Haynes Boone biography states he has represented clients in more than 100 post-grant proceedings (a 2026 partnership announcement cited "over 80," and earlier bios said "over sixty," reflecting growth over time), including both petitioner and patent owner roles, ex parte reexamination, expert development, depositions, and oral argument. Patexia's PTAB Intelligence Report ranked him among the top 100 most active petitioner-side attorneys in 2023 and among the top 100 best-performing in 2023 and 2024; the 2024 release states he achieved a top-1% win rate and ranked ninth in petitioner performance, and the 2025 report ranked him ninth in petitioner performance. He has published on PTAB discretionary institution and parallel petitions (2020) and on IPR estoppel (2020). In the tracked docket, most of his listed roles are "back-up counsel" rather than lead counsel.

Side preference. The tracked counts are 11 plaintiff-side versus 2 defendant-side appearances, but the party labels require context: in these PTAB matters the "plaintiff" is the petitioner. Those petitioners are operating technology companies — Intel, Apple, Google, and Cisco — challenging patents asserted by non-practicing entities including General Video, MyPort, Damaka, and Wildseed Mobile. The practical orientation is therefore challenger/defense-side work for large technology defendants, not prosecution of NPE infringement claims. His own bio notes he has handled both petitioner and patent owner positions, so the practice is not exclusively one-sided, but the dominant pattern in the tracked record is representing technology-company petitioners.

Firm context, notable matters, and credentials. All 13 tracked appearances are at Haynes and Boone, where he was an associate and then counsel and was elevated to the firm's partnership in its 2026 class (announced for effect in January 2026). I found no verifiable record of a prior law firm employer; his bio states only that he worked as a patent agent before and during law school, without naming the employer. Notable tracked matters: Google v. Wildseed Mobile — the Board found claims of U.S. Patent 7,376,414 unpatentable as obvious, and the Federal Circuit affirmed in nonprecedential decisions in 2026 (including Wildseed Mobile, LLC v. Google LLC, No. 24-1846, Apr. 30, 2026); Apple v. MyPort Technologies — in the parallel Delaware action the court granted Apple's §101 motion to dismiss on Sept. 23, 2025 and denied leave to amend, dismissing the case with prejudice on Dec. 18, 2025 (I could not confirm Clements personally argued that motion); Intel/Dell v. General Video — the IPR petitions were denied institution on discretionary grounds on Oct. 17, 2025, an adverse result in that set; and Apple v. Fintiv (the proceeding family behind the Fintiv discretionary-denial framework) and Cisco v. Damaka appear in his tracked docket. Admissions: Texas and registered to practice before the USPTO (Reg. No. 66,910). Education: J.D., George Washington University Law School, 2013; B.S./Electrical Engineer, Brigham Young University, 2009.

Sourcing note: other attorneys named Clements practice patent law (including a former Ropes & Gray attorney later at the PTAB), and sources were matched to Haynes Boone and USPTO Reg. No. 66,910. No verdicts or settlements attributable to him personally were found beyond the PTAB/Federal Circuit results above; the tracked 2026 partnership elevation comes from a Haynes Boone press release.