On-Sale Bar

Legal principle regarding whether a secret commercial sale prior to filing a patent application invalidates the patent.

1. Helsinn Healthcare S.A. v. Teva Pharmaceuticals USA, Inc.

2. Jurisdiction: United States (January 22, 2019)
3. DefendantsTeva Pharmaceuticals USA, Inc.PlaintiffsHelsinn Healthcare S.A.Defense AttorneysWilliam M. JayPlaintiff AttorneysKannon K. ShanmugamJudgesClarence ThomasInstitutionsSupreme Court of the United StatesUnited States Court of Appeals for the Federal CircuitHelsinn Healthcare S.A.Teva Pharmaceuticals USA, Inc.
4. Case Tags: Patent Law;On-Sale Bar;Supreme Court of the United States;AIA (Leahy-Smith America Invents Act)