Mark Derek Westerhof has been granted 4 US patents while listed as an inventor at Fortinet. The first was granted in 2024 and the most recent in September 2025. Mark Derek Westerhof ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Mark Derek Westerhof in Port Coquitlam, BC, CA.