On June 8, 2022, Senators Leahy, Blumenthal, Klobuchar, Cornyn, Collins and Braun sent a letter to U.S. Patent and Trademark Office (USPTO) Director Kathi Vidal expressing concern about so-called “patent thickets” and requesting that she consider changes to the USPTO regulations and practices to address perceived problems with patent examination. The senators asked the USPTO to issue a notice of proposed rulemaking (which presumably must include new draft regulations) or at a minimum, a public request for comments followed by regulatory action, to address their concern about “the prevalence of continuation and other highly similar patents”.

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