The United States Court of Appeals for the Federal Circuit on May 23, 2019, found Papst Licensing GMBH & Co.'s software patent, which is related to a software interface device with high data transfer rates, invalid because it was covered by other patented technology and published research.

In a May 22, 2019 press release, Senators Thom Tillis (R-NC) and Chris Coons (D-DE), Chair and Ranking Member of the Senate Judiciary Subcommittee on Intellectual Property, Representative Doug Collins (R-GA), Ranking Member of the House Judiciary Committee, Representative Hank Johnson (D-GA), Chairman of the House Judiciary Subcommittee on Courts, Intellectual Property and the Internet, and Representative Steve Stivers (R-OH) released a bipartisan, bicameral draft bill that would reform Section 101 of the Patent Act.

Under § 365 of the Bankruptcy Code, a debtor-licensor's "rejection" of a contract operated as a breach of the contract and not as a rescission, the Supreme Court held May 20, 2019. Mission Product Holdings Inc. v. Tempnology, LLC, US, No. 17-1657, 5/22/2019.

The United States Court of Appeals for the Federal Circuit on May 13, 2019, held that AVX Corp., a manufacturer of electronic components, did not have standing to challenge the Patent Trial and Appeal Board's (PTAB) decision not to invalidate a competitor’s patent. AVX Corp. v. Presidio Components, Inc., Fed. Cir., No. 2018-1106, 5/13/19.

The United States Court of Appeals for the Federal Circuit on May 15, 2019, invalidated two of Horizon Therapeutics PLC’s patents for arthritis pain reliever drug Vimovo.