Mr. William J. (Hal) Hallihan and Dr. Gregory S. Umberson, MD have formed Hallihan IP Partners, LLC, a firm of Chicago Patent Attorneys, Chicago Trademark Attorneys and Chicago Patent Agents serving the intellectual property needs of corporations throughout the US and the world.   

See www.hallihan.com 
117 N. Jefferson, Suite 200
Chicago, IL 60661
Phone 312-784-3000
Fax 312-223-1515
email hal@hallihan.com