Last week marked the second phase of implementation of the Leahy-Smith America Invents Act, a comprehensive overhaul of U.S. patent law signed into law on Sept. 16, 2011. Several key provisions of the law took effect last week, most notably new procedures for third parties to challenge patents after they have been issued and new rules allowing third parties to submit prior art for patent applications.

This week in the the legal-affairs podcast Lawyer2Lawyer, we discuss these changes with two leading experts in patent law:

Listen to the show or download it from the Legal Talk Network or from iTunes.