Douma, Mark Address: 1001 Manning St, Great Falls, VA 22066 Phone: (703) 759-1002 Hours: Mon: 9am-5pm Tue: 9am-5pm Wed: 9am-5pm Thu: 9am-5pm Fri: 9am-5pm Lawyers, Copyright, Patent, Trademark Other Businesses: Braus, David at 9036 Jackson Ln, Great Falls, VA 22066 Muir Patent Consulting at 9913 Georgetown Pike, Great Falls, VA 22066 Fitch & Associate LLC at 1205 Forestville Dr, Great Falls, VA 22066 Capital Project Strategies at 873 Old Holly Dr, Great Falls, VA 22066