A Lack of Essential Testing Method Parameter in Patent Claims Led to Indefiniteness, but Inequitable Conduct Is Hard to Prove – Lessons from Sun v. Lupin

In a recent District of New Jersey decision, Chief Judge Wolfson found a patent indefinite, obvious, and not infringed (due to a failure of proof). Sun Pharma v. Lupin, 2021 WL 4473411 (Sept. 30, 2021). However, the court did not find inequitable conduct by clear and convincing evidence, despite the inventor’s “hubris” and incorrect understanding […]