‘Now We Know’ – Lessons in Preserving Constitutional Error Before the USPTO

In 2019, the issue of preservation of constitutional arguments before the USPTO, which had basically been dormant for a decade, was abruptly and dramatically revived. Now the subject of whether constitutional arguments generally ought to be preserved before the agency is settled, at least for the time being. Constitutional arguments should ordinarily be preserved before the agency; otherwise those constitutional arguments might be summarily deemed forfeited on appeal.

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