( October 2, 2025, 1:25 PM EDT) -- WASHINGTON, D.C. — A Federal Circuit U.S. Court of Appeals panel ruled Oct. 1 that the U.S. Patent Trial and Appeal Board (PTAB) correctly held that a technology company’s substitute claims in a patent related to displaying social media posts on a geographic map satisfy the written description requirement under the Patent Act; however, the panel also decided that PTAB erred in its consideration of the obviousness of those substitute claims....