Another new inter partes review to watch at the Patent Trial and Appeal Board: IPR2026-00387, filed June 5, 2026, and captioned Optiver US LLC. At this early stage, the docket signals the start of a potentially important dispute for companies operating in technology-driven and latency-sensitive markets, but the petition itself will be the key document for practitioners looking to assess the full stakes of the case.

Based on the current docket entry, Optiver US LLC is the petitioner seeking review of an issued U.S. patent.