On August 20, 2015, the Patent and Trademark Office published, in the Federal Register, a set of “Amendments to the Rules of Practice for Trials Before the Patent Trial and Appeal Board” that would amend 37 CFR Part 42. Among the ten topics encompassed by the proposed amendments, two noteworthy changes include: (1) new evidence allowed in Patent Owner’s preliminary response; and (2) briefing length limited by word count rather than page limits. Each topic is discussed in turn below, with our initial practical TAKEAWAYS for each respective section.