United States v. Arthrex became the constitutional pivot point for PTAB final written decisions.

The Supreme Court held that administrative patent judges could not have unreviewable executive-branch authority over patent validity and supplied a remedy through Director review.

For PTAB practice, the case changed post-decision strategy. Parties gained a new institutional path to seek review of Board decisions by the PTO Director.

Every later discretionary-denial and Director-review story in IPDispatch should link back to Arthrex.