Thomson Reuters (TRI -1.35%) has acquired Canadian trademark search, monitoring, and screening firm Onscope, Thomson announced Tuesday.

Thomson's CompuMark subsidiary is already a leader in trademark search globally. Today's purchase, the value of which was not disclosed, should improve the company's ability to do trademark searches (prudent before picking a new trademark for a business, and to avoid accidental trademark infringement) in Canada in particular.

Commenting on the acquisition, Thomson CompuMark Vice President Viji Krishnan characterized the acquisition as being primarily aimed at gaining access to Onscope's clients, explaining that "Onscope's clients will benefit from the extensive trademark expertise Thomson CompuMark provides."

Thomson shares gained 1.2% in Tuesday trading, closing at $32.68.