On June 4, 2018, the Federal Circuit heard oral argument in Allergan’s effort to assert tribal immunity at the PTAB to shut down six IPRs against its Restasis® patents. The St. Regis Mohawk Tribe has appealed the PTAB’s prior decision that it cannot assert its immunity as a basis to terminate the IPRs. While there was no clear indication for how the three-judge panel at the Federal Circuit would rule, there were some interesting exchanges revealing how the Court views these types of transactions, and how viable they may be in the future.
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