The Firms

The firms of SIM & McBURNEY and SIM ASHTON & McKAY LLP were founded in 1970 to provide a full range of services in intellectual property and commercial litigation in Canada.

We are located in the heart of downtown Toronto, Canada’s largest city, convenient to the Courts, local patent & trade-mark filing offices, and the offices of many of Canada’s largest business enterprises.

SIM & McBURNEY is a partnership of patent and trade-mark agents entitled to file and prosecute patent, trade-mark, industrial design, integrated circuit and copyright applications in Canada and the United States of America, with connections throughout the world to enable clients to efficiently file and coordinate applications on a global basis.

SIM ASHTON & McKAY LLP is a partnership of lawyers specializing in intellectual property law and commercial litigation in the Ontario Superior Court of Justice, the Federal Court of Canada, and the Supreme Court of Canada. We have represented parties in much of the significant intellectual property litigation in this country. Legal services of the highest level relating to licensing, maintaining and enforcement and defense of intellectual property matters are given to a broad range of clientele, both Canadian and foreign.

The two firms cooperate to provide a full range of services in the intellectual property and commercial litigation field. We have expertise in many areas, not all of which are listed on our site so, if you require information in areas you do not see mentioned please contact us.