About Gao Law Professional Corporation

Gao Law Professional Corporation, which operates together with Gao IP Agency Ltd. under the name Gao IP, is an intellectual property practice based in downtown Toronto at 18 King Street East. The firm is run by founder Lei Gao, a Barrister and Solicitor admitted in Ontario who is also a lawyer admitted in New York State, a registered Canadian patent agent, and a registered Canadian trademark agent. Before starting this practice, Lei Gao worked at Ridout and Maybee LLP, an intellectual property firm in Canada, and in the intellectual property department at Baker McKenzie, a global law firm. Lei Gao also previously worked as a Canadian trademark examiner.

The practice covers patents, industrial designs, trademarks, and copyright for clients in Canada, the United States, and internationally, handling matters from patentability opinions and application drafting through prosecution, licensing, and enforcement. Because Lei Gao is a registered trademark agent in Canada and a member of the New York bar, the firm can represent applicants directly before the Canadian Intellectual Property Office and the United States Patent and Trademark Office, and has arranged patent filings in jurisdictions including Europe, Asia, Latin America, and Australia.

Milestones & recognition

  • Founder Lei Gao is a registered Canadian patent agent, a registered Canadian trademark agent, and a Barrister and Solicitor admitted in Ontario, as well as a lawyer admitted in New York State and a registered patent agent at the USPTO for Canadian applicants.
  • Before starting the practice, Lei Gao worked at Ridout and Maybee LLP, an intellectual property firm in Canada, and in the intellectual property department at Baker McKenzie, a global law firm.
  • Lei Gao previously worked as a Canadian trademark examiner.
  • Lei Gao served for several years as an Executive Member of the Ontario Bar Association's Information Technology and Intellectual Property Law section and is an associate of the Intellectual Property Institute of Canada.
  • Lei Gao has published articles on intellectual property law, including in Canadian Lawyer InHouse Magazine.

Good to know

A calendar with a checkmark beside a clockBy appointment

Who handles what

The neighbourhood

Gao IP's office is in Suite 1400 of the tower at 18 King Street East, an 18 storey office building in Toronto's Old Toronto downtown neighbourhood. The building sits steps from King subway station and connects to the underground PATH network. The firm sees clients by appointment, and offers virtual or phone consultations for those who aren't downtown.

Frequently asked questions

Can Gao IP file a patent application for me outside Canada?
Yes. Gao IP prepares and files patent applications in Canada, the United States, and other jurisdictions, and has arranged the filing and prosecution of patent applications in places including Europe, Asia, Latin America, and Australia.
Can Gao IP register my trademark in both Canada and the United States?
Yes. Because founder Lei Gao is a registered Canadian trademark agent and a lawyer admitted in New York State, the firm can represent applicants directly before both the Canadian Intellectual Property Office and the United States Patent and Trademark Office.
Does Gao IP offer a fixed fee for trademark applications?
Yes. The firm offers a fixed fee trademark application service in Canada and the United States that covers a consultation, preparing and filing the application, and monitoring it through the process. Contact the firm for current fees.
Do I need to visit the Toronto office in person?
No. Gao IP sees clients at its King Street East office by appointment, and also offers a 15 minute confidential consultation by virtual meeting or phone call, with no obligation to hire the firm.
Does Gao IP handle copyright as well as patents and trademarks?
Yes. In addition to patent, industrial design, and trademark work, the firm helps clients prepare and file Canadian copyright registration applications and advises on other copyright issues.
What kind of technology does Gao IP handle patent work for?
The firm has helped clients obtain patents across a broad range of fields, including mechanical, electrical, electronics, computer software, oil and gas, biofuel, green technology, chemical, biotechnological, and agricultural technology.

Where to find them

18 King St E, Suite 1400, Toronto, ON M5C 1C4

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