Campo's Deli at Market

cheesesteak.jpgIPNews® – A Philadelphia deli is continuing its quest to federally register the trademark “Philadelphia’s Cheesesteak” with a new lawsuit against U.S. Patent and Trademark Office Director David Kappos, having failed to persuade the PTO or the office’s Trademark Trial and Appeal Board that the mark is registrable.

In August the TTAB upheld the PTO’s