(July 14, 2023, 1:59 PM EDT) -- ALEXANDRIA, Va. — The U.S. Patent and Trademark Office (PTO) has secured dismissal of a Virginia federal lawsuit in which two plaintiffs challenged reliance by the agency’s Patent Trial and Appeal Board on a set of nonexclusive factors for determining whether to institute post-grant review (PGR) of recently issued patents in the face of related parallel district court litigation....