Robert Allan Bullwinkel

Robert Allan Bullwinkel is a Partner at Heim, Payne & Chorush, LLP, specializing in intellectual property litigation, particularly patent disputes involving computer, electrical, and networking technologies. His technical focus spans areas such as cellular networks, fiber-optic networks, IP routing, video streaming, mobile applications, cryptography, and pharmaceuticals. Bullwinkel leverages over a decade of experience as a software developer, providing him with a robust understanding of complex technical details in his legal practice.

Bullwinkel maintains a balanced patent litigation practice, with an equal number of plaintiff and defendant appearances in tracked cases. He has significant experience representing patent owners in enforcing their intellectual property rights. Notable representations include his work for Wapp Tech in patent infringement litigations concerning mobile application development against entities like Bank of America Corporation, which settled favorably during fact discovery. He also represented Network-1 Technologies, Inc. as a plaintiff in patent infringement litigation against Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. Additionally, Bullwinkel played a key role in the Lipitor Antitrust Litigation, which resulted in a $93 million settlement against one defendant for plaintiffs.

He is actively involved in post-grant proceedings, frequently representing clients in inter partes review (IPR) proceedings and Federal Circuit appeals. His PTAB experience includes representing patent owners in Packet Intelligence IPRs and successfully defending Dr. Barkan in an IPR where the Board declined to institute a trial. Bullwinkel is recognized for his PTAB activity and performance, earning rankings in Patexia's 2026 PTAB Intelligence Report as both a Top 250 Best Performing Attorney and a Top 250 Most Active Attorney.

Admitted to practice in Texas, the U.S. Court of Appeals for the Federal Circuit, and the U.S. Patent & Trademark Office, Bullwinkel began his legal career as a law clerk for the Hon. Leonard Davis at the U.S. District Court for the Eastern District of Texas.