Gwilym J.O. Attwell

Gwilym J.O. Attwell is a Principal at Fish & Richardson, focusing his practice on patent litigation, prosecution, and strategic counseling for clients in diverse technological fields. His professional background highlights a strong emphasis on life sciences, assisting biotech, medical device, and pharmaceutical companies with patent portfolio development, monetization, and intellectual property assessments. His technical experience spans areas such as vaccines, antibodies, genomics, polypeptides, small molecule inhibitors, gene therapy, diagnostics, and therapeutics. However, his litigation experience also extends to electrical and mechanical technologies, including semiconductor devices and decorative lighting.

In his litigation practice, Mr. Attwell primarily represents defendants, as evidenced by his appearances in all tracked cases on the defendant side. He has served as defense counsel in matters such as Ledup Manufacturing Group Ltd v. Seasonal Specialties LLC, which involves patents related to decorative lighting on pre-lighted Christmas trees, and Greenthread, LLC v. Renesas Electronics America, Inc., a case concerning semiconductor device patents, where the plaintiff, Greenthread, LLC, is a patent assertion entity.

Mr. Attwell possesses significant experience in post-grant proceedings before the Patent Trial and Appeal Board (PTAB), including inter partes review (IPR) and post-grant review (PGR) petitions. He is recognized for his expertise in this area, frequently lecturing and speaking at industry conferences on PTAB-related topics, and is a member of the PTAB Bar Association. Notably, the Greenthread v. Renesas Electronics America case was administratively closed pending the outcome of IPR proceedings at the PTAB.

He earned his J.D. from Temple University Beasley School of Law in 1997, an M.S. in Zoology from Miami University in 1992, and a B.S. in Neurobiology, Animal Physiology from Purdue University in 1989. Mr. Attwell is admitted to practice before the U.S. Patent and Trademark Office (2000) and in the bars of Pennsylvania (1997), New Jersey, and the District of Columbia (2011).