Zachary H. Hilton

Summary for Zachary H. Hilton
As of May 11, 2026

Zachary H. Hilton is a patent litigator associated with the firm Antonelli, Harrington & Thompson LLP, a Houston-based patent litigation boutique. His publicly tracked case history shows representation on the plaintiff’s side. Based on the single case tracked to him, he has represented a patent assertion entity. Further details about his specific practice areas, professional background, and bar admissions are not available in publicly accessible sources.

The authoritative case list identifies Mr. Hilton as lead counsel for Portus Singapore Pte. Ltd. in a 2019 patent infringement case against AXP Group (Vivint) in the U.S. District Court for the Northern District of Texas. The case is now closed. The plaintiff, Portus Singapore, has been identified as a non-practicing entity (NPE). No information regarding the specific technology at issue in the case or the outcome is publicly available.

Mr. Hilton’s law firm, Antonelli, Harrington & Thompson, describes its practice as focused exclusively on patent litigation. The firm's founders are former attorneys from Weil, Gotshal & Manges. The firm notes a preference for contingency or fixed-fee arrangements over traditional hourly billing. There is no record of Mr. Hilton having experience in IPR or other PTAB proceedings. No verifiable information on his education or bar admissions could be found in public sources.