Profile
A Century of Intellectual Property Leadership
Marks & Clerk is one of the world’s leading intellectual property firms, with a rich history in Canada dating back to 1921. For over 100 years, their Ottawa office has been at the forefront of protecting innovation in the National Capital Region. Part of a global network with offices across Europe, Asia, and the Americas, they offer clients the best of both worlds: local expertise and international reach. If you need to hire a patent attorney who can secure your rights in multiple jurisdictions simultaneously, Marks & Clerk provides unmatched resources and experience.
Comprehensive Patent Services
The firm’s patent practice is renowned for its technical depth. Their team includes specialists in life sciences, electronics, AI, and telecommunications. They work with startups, universities, and multinational giants to draft, file, and prosecute patent applications. Their deep understanding of the Canadian Intellectual Property Office (CIPO), located just across the river, ensures that clients navigate the regulatory landscape efficiently. Whether you are defending a patent in court or conducting due diligence for a merger, their lawyers deliver strategic and commercially focused advice.
Trademarks and Brand Protection
In a global marketplace, your brand is your most valuable asset. Marks & Clerk’s Trademark team helps businesses select, register, and enforce their marks in Canada and abroad. They handle opposition proceedings, expungement hearings, and anti-counterfeiting actions. They also advise on Copyright and digital asset protection. If you are looking to find an IP lawyer to manage a complex international portfolio, their integrated global systems make the process seamless.
- Global IP Management: One-stop shop for worldwide protection.
- IP Litigation: High-stakes dispute resolution.
- Due Diligence: Assessing IP value for investors and buyers.
Now located in the prestigious World Exchange Plaza on O’Connor Street, the firm continues to invest in the Ottawa community. Their longevity and track record of success make them a pillar of the Canadian legal industry.
Specializing In
Global Patent Filing, Trademark Opposition, IP Due Diligence, Life Sciences IP
Address & Location
45 O’Connor St, Suite 300, Ottawa, ON K1P 1A4
Building Location
Located in the World Exchange Plaza (Tower I), a major office complex in downtown Ottawa, bordered by Queen, Albert, O’Connor, and Metcalfe streets.
Suite Access
Enter the Tower I lobby (closest to O’Connor St) and take the elevators to the 3rd floor.
Parking Details
Paid underground parking is available within the World Exchange Plaza (accessible via Metcalfe and Queen Streets). Free parking is often available in this garage on weekends.
Public Transit
Directly connected to the Parliament LRT Station (O-Train Line 1) via the concourse level. Multiple bus routes stop outside.
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