The US District Court for the Western District of Wisconsin on May 24, 2019, granted a preliminary injunction preventing Anheuser-Busch Companies, LLC from implying in its advertisements that MillerCoors LLC beers contain corn syrup.

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.