Turner Boyd Seraphine

Turner Boyd Seraphine (TBS) was an intellectual property litigation boutique firm, founded in 2008 by Julie Turner and Karen Boyd, and renamed in 2023 with the addition of Jennifer Seraphine as a named partner. The firm operated with a focus on providing an alternative to the traditional "Big Law" model. As of January 2026, Turner Boyd Seraphine's practice and attorneys integrated into Thompson Hine LLP, establishing Thompson Hine's Silicon Valley office. Prior to the merger, TBS was nationally recognized in the 2026 edition of Best Law Firms for Litigation–Intellectual Property, Litigation–Patent, and Patent Law, and achieved Tier 1 ranking in these categories in the San Francisco Metro area.

The firm specialized exclusively in intellectual property litigation, including patent, trade secret, trademark, and copyright disputes. Their attorneys possessed deep scientific and technical expertise, with credentials ranging from Ph.D.s in physics and biophysics, graduate training in molecular biology, to degrees in electrical, materials, mechanical, and biomedical engineering, as well as computer science and applied mathematics. Karen Boyd, a founding partner, has represented clients across diverse technologies such as pharmaceuticals, consumer electronics, and medical devices. The team maintained extensive experience in prominent patent litigation venues, including the Eastern and Western Districts of Texas, the District of Delaware, and the Northern District of California.

Turner Boyd Seraphine served a broad client base, from solo inventors to Fortune 100 companies. While the firm's tracked appearances indicate a plaintiff-side engagement (1 plaintiff, 0 defendant), other firm descriptions confirm experience representing clients as both plaintiffs and defendants in intellectual property matters. They have been noted for securing victories against both large corporations and non-practicing entities.

A notable active matter involving TBS attorneys (now at Thompson Hine) includes representing Infineon Technologies, a major semiconductor manufacturer, in a patent infringement complaint against Innoscience over gallium nitride (GaN) technology, leading to a U.S. International Trade Commission (ITC) investigation instituted in August 2024. Beyond district court litigation, the firm's practice also encompassed post-grant review proceedings before the U.S. Patent and Trademark Office (USPTO), including capabilities before the Patent Trial and Appeal Board (PTAB) and the ITC.

Key partners who led Turner Boyd Seraphine's patent litigation practice included founding partner Karen I. Boyd, named partner Jennifer Seraphine, and partner Megan Whyman Olesek, all of whom transitioned to Thompson Hine LLP as part of the 2026 merger. Karen Boyd is recognized for her extensive experience, including a clerkship at the Federal Circuit and teaching patent law. Jennifer Seraphine, a former Jones Day partner, is known for her lead trial counsel experience across various IP cases.