In more than 40 years of practice, David Ehrlich prosecuted more than 6,000 trademark applications. He advised clients on U.S. trademark and copyright matters ranging from searching, clearance, and prosecution, to trademark appeals, oppositions, and cancellation proceedings. David also managed large U.S. trademark portfolios and counselled on infringement claims involving trademarks, copyrights, and trade dress, as well as celebrity names and images.