![Helsinn v Teva DRAFT[22600]](https://subscriptlaw.com/wp-content/uploads/elementor/thumbs/HelsinnvTeva-1-oywcdwvs35cswva156holqo4yivq63scxdfqe29nd4.jpg "Helsinn v Teva DRAFT[22600]")
The Supreme Court reinforced the longstanding rule that even a non-public sale may invalidate a patent.
Introducing the process to challenge an existing patent, Inter Partes Review.
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