IP Library
Patent Agent

John S Koh

Reg. No. 53943
Active
Not accepting new clients
Firm
Marks & Clerk
Location
Ottawa, ON K1P 0B6
Phone
613-236-9561
Registration Type
AGENT
Roster
USPTO OED FY25
Search their patent cases → All cases at Marks & Clerk
Firm and contact info reflects the FY25 roster (last updated September 25). Attorneys may have changed firms since then — patent filings show their current firm of record.