Does PNK Law handle patent applications for a new invention?

Yes. The firm's lawyers combine law degrees with technical backgrounds, including in chemical, electrical and mechanical engineering, and they prosecute patent applications across many kinds of technology, from a startup's first invention to an established manufacturer's ongoing portfolio.

Can PNK Law register a trademark for my business?

Yes. The firm's lawyers are also registered trademark agents. They run clearance searches, file applications covering words, designs and other trademark elements, and represent brand owners in opposition proceedings before the Canadian Trademarks Office.

Does PNK Law protect the design of a product, not just how it works?

Yes, through industrial design applications, which protect the unique appearance of a functional object rather than its function. The firm files and prosecutes these applications across a range of industries.

If someone is infringing my patent, trademark or copyright, does PNK Law go to court?

Yes. IP litigation is one of the firm's core practice areas, and its lawyers have appeared at every level of the Canadian court system, up to the Supreme Court of Canada, in patent, trademark and copyright disputes.

Where is PNK Law located and how do I reach the firm?

The office is at 10 King Street East, Suite 900, in downtown Toronto. The firm can be reached at 416-955-0050 or by email at office@pnklaw.ca.

Piasetzki Nenniger Kvas LLP | LawOnline Directory

About Piasetzki Nenniger Kvas LLP

Piasetzki Nenniger Kvas LLP, known as PNK Law, is a Toronto law firm that has practiced exclusively in intellectual property law for more than 30 years. The firm takes its name from three of its founders, Gregory Piasetzki, James Nenniger and Christopher Kvas, and its lawyers work across patents, trademarks, industrial design and IP litigation. Clients range from Fortune 500 companies to startups filing a first patent or trademark application.

What distinguishes the firm's lawyers is their technical training. Several hold engineering degrees, including in chemical, electrical and mechanical engineering, on top of their law degrees, which lets them work through an invention's technical details before drafting a patent application. On the litigation side, firm lawyers have acted as counsel in Canadian patent cases including Whirlpool, one of the country's most frequently cited patent decisions, and have represented professional sports leagues before the Copyright Board in disputes over music and broadcast signal royalties. More than one lawyer at the firm holds Law Society of Ontario certification as a Specialist in Intellectual Property (Patent) Law.

Practice areas

Intellectual Property

Milestones & recognition

Founding partner Gregory Piasetzki taught Patent Law at Queen's University's Faculty of Law for three years and wrote a chapter on alternative dispute resolution for an intellectual property law text published by Carswell.
A former partner at the firm served on the Patent Agents Examining Board.
More than one lawyer at the firm is certified by the Law Society of Ontario as a Specialist in Intellectual Property (Patent) Law.
Firm lawyers have acted as counsel in Whirlpool, one of the most frequently cited patent decisions in Canadian law, along with other patent and trademark disputes including Frac Shack v. AFD, Seismotech v. ecobee, NCS v. Kobold and Red Wing v. Viberg.
In 2026, founding partner Gregory Piasetzki gave $250,000 to Queen's University's Business Law Clinic, funding a new review counsel position and additional student caseworkers and increasing the clinic's caseload capacity by about 30 percent.

Good to know

Wheelchair accessible

Lawyers 9

Adrian Kaplan Partner Intellectual Property Christopher Kvas Counsel Intellectual Property Dan Keller Partner Intellectual Property Evan Reinblatt Partner Intellectual Property Gregory A. Piasetzki Counsel Intellectual Property Mandy Yee Associate Intellectual Property Rachael Gregoris Associate Intellectual Property Stephen Shoshan Partner Intellectual Property William Regan Partner Intellectual Property

This firm’s lawyers at a glance

Called to the bar: 1982–2015 · median 30 years in practice 5 of 9 lawyers
Law schools: Osgoode Hall Law School (2), Queen's University (2), University of Toronto (2), Western University 7 of 9 lawyers

Who handles what

Intellectual Property
Adrian Kaplan, Christopher Kvas, Dan Keller, Evan Reinblatt, Gregory A. Piasetzki, Mandy Yee, Rachael Gregoris, Stephen Shoshan, William Regan

The neighbourhood

PNK Law's office is in Suite 900 at 10 King Street East, near the intersection of Yonge and King Street in downtown Toronto. King Street through this stretch of downtown runs past several of the city's major bank towers, among them the Toronto-Dominion Centre, First Canadian Place, Scotia Plaza and Commerce Court, along with the Toronto Stock Exchange, putting the firm within a few blocks of much of Toronto's financial core. That's a fitting address for a firm whose clients run from established corporations to startups working through a first patent or trademark filing.

Frequently asked questions

Does PNK Law handle patent applications for a new invention?: Yes. The firm's lawyers combine law degrees with technical backgrounds, including in chemical, electrical and mechanical engineering, and they prosecute patent applications across many kinds of technology, from a startup's first invention to an established manufacturer's ongoing portfolio.
Can PNK Law register a trademark for my business?: Yes. The firm's lawyers are also registered trademark agents. They run clearance searches, file applications covering words, designs and other trademark elements, and represent brand owners in opposition proceedings before the Canadian Trademarks Office.
Does PNK Law protect the design of a product, not just how it works?: Yes, through industrial design applications, which protect the unique appearance of a functional object rather than its function. The firm files and prosecutes these applications across a range of industries.
If someone is infringing my patent, trademark or copyright, does PNK Law go to court?: Yes. IP litigation is one of the firm's core practice areas, and its lawyers have appeared at every level of the Canadian court system, up to the Supreme Court of Canada, in patent, trademark and copyright disputes.
How long has PNK Law been practicing intellectual property law?: The firm has practiced exclusively in intellectual property law for more than 30 years.
Where is PNK Law located and how do I reach the firm?: The office is at 10 King Street East, Suite 900, in downtown Toronto. The firm can be reached at 416-955-0050 or by email at office@pnklaw.ca.

Where to find them

10 King Street East, Suite 900, Toronto, ON M5C 1C3, Canada · 416-955-0050

Similar firms in City of Toronto

Bhole IP Law

3 lawyers

Bhole IP Law is a Toronto intellectual property law firm practising in patents, trademarks, industrial designs, and IP licensing. Its lawyers and agents work across sectors including machine learning, augmented realit…

Intellectual Property

OLLIP P.C.

3 lawyers · Est. 1996

OLLIP P.C. is a boutique law firm specializing in intellectual property and technology law, established in 1996, with offices in Ottawa and Toronto. It handles trademarks, copyrights, industrial designs, IP litigation…

Intellectual Property

Technology & Startups

Oziel Law

9 lawyers · Est. 2012

Oziel Law is a business law firm founded in 2012 by Allan Oziel, focused on corporate, technology, and intellectual property matters for startups and established companies. It has been recognized as a Tier 1 Law Firm …

Business & Corporate Law

Intellectual Property

Technology & Startups

Listing compiled from the firm’s public website in August 2026. Verify licence status in the Law Society of Ontario directory ↗