Minneapolis Intellectual Property Law Office Christensen, Fonder, Dardi11322 86th Ave N,Maple Grove, MN 55369612-315-4100 Map & Directions Recent Posts How to protect your business with a trademark Patent searches: what you need to know What are the differences between common law trademarks and registered trademarks? Can I lose the rights to my invention? Recognizing you’ve got a patentable idea