U.S. Patent and Trademark Office Director Andrei Iancu has made it official. He will be leaving the agency as the presidential administration transitions to Joe Biden.

Most political appointees are expected to conclude their tenure by the time new presidents are inaugurated, but the cloud over the transition made this year unusual. President Donald Trump did not request resignations, and because of delays in the transition, it will likely be months before Team Biden advances a nomination. And Iancu has been a popular leader, especially among patent owners.