The legislation okayed by the House committee aims to improve patent quality by setting up a process to re-evaluate patents after they are granted. Supporters argues such post-grant reviews would help weed out bad patents by allowing companies to challenge them without having to go through lengthy litigation that can result in large financial penalties and stifle innovation.
[link|http://biz.yahoo.com/ap/070718/patent_reform_congress.html?.v=3|Yahoo Biz].

Post-grant review looks like an improvement to me. Smaller players that can't monitor all of patent activity can focus on those that will potentially affect them.