Complex sentence: John J. Doll was the Acting United States Under Secretary of Commerce for Intellectual Property and Acting director of the United States Patent and Trademark Office (USPTO) since the resignation of Jon W. Dudas on January 20,2009.
Split into simpler sentences: John J. Doll is the current Acting United States Under Secretary of Commerce for Intellectual Property and Acting director of the United States Patent and Trademark Office (USPTO). He holds the position since the resignation of Jon W. Dudas on January 20,2009.