Lumen is a Patent Firm Providing Excellence in Patent Prosecution to our High-Technology Clients For more information about how we can serve you please contact us at the address/telephone below and visit our full web page by clicking the "ENTER" button. Lumen Patent Firm 350 Cambridge Ave., Suite 100 Palo Alto, CA 94306 Phone: (650) 424-0100 or (888) 475-8636 (toll free)   Note: The Macromedia Flash plugin 6 or above is required to view this site. If you do not already have it please install before entering the main site. Directions to Lumen