Rebecca Tushnet, a professor at Harvard Law School, writes this blog covering false advertising law, as well as other trademark and copyright issues. It is searchable by subject and is archived back to 2003.
This popular patent blog by Dennis Couch, a professor at the University of Missouri School of Law, includes commentary on current issues in patent law and lists job postings. It is searchable by subject and is archived back to April, 2004.
Popular trademark blog provides commentary on notable decisions of the Trademark Trial and Appeal Board; lists precedential TTAB decisions by year, articles, and useful links; and includes a blog archive back to November, 2004.