The USPTO proposes to extend its existing Patent Technical Services contract with LHDTSV, LLC on a sole-source basis for a six-month period. This is a hybrid firm-fixed-unit-price and labor-hour contract, originally awarded after competition, but the extension pricing was not evaluated at award. The proposed period of performance for this extension is September 28, 2026, through March 27, 2027. No budget amount or performance location is specified in this notice.