Anand & Siu LLP
Automatically compiled listing. Details may contain errors.3 lawyers · City of Toronto
One of 2,276 law firms listed in Toronto, and one of 136 handling Intellectual Property.
About Anand & Siu LLP
Anand & Siu LLP is a Toronto firm devoted to high-stakes intellectual property litigation in Canada, with clients that run from Fortune 500 companies to startups. Its lawyers help clients assert and defend their IP rights, acting for plaintiffs and defendants alike in disputes over patents, trademarks and copyright, plus trade secrets and confidential information, across many industries.
Litigators Nisha Anand and Kevin Siu founded the firm, and both are co-founders and partners. Nisha Anand is a scientist turned litigator who earned a PhD in molecular biology, genetics and cancer at McMaster University before taking a law degree at the University of Toronto. Kevin Siu has more than ten years in IP litigation, holds an engineering science degree from the University of Toronto, and has industry experience from an engineering consulting firm and from work as a software developer. Hannah Goold, the firm's first associate, focuses on patent disputes and graduated with distinction from Western University in microbiology and immunology plus interdisciplinary medical sciences.
The team's experience reaches across drugs and life sciences, telecommunications and software, entertainment, and oil and gas, and it's taking on newer questions about AI, large language models and who owns IP. Its lawyers have represented both the David and the Goliath in disputes, and they've been lead counsel in significant patent matters.
The firm works from Suite 2200 at 181 University Avenue in downtown Toronto.
Practice areas
Patent litigation
Nisha Anand's practice centres on patent cases in pharmaceuticals, telecommunications, and oil and gas. Kevin Siu has argued in the Federal Court and Federal Court of Appeal, in Ontario and British Columbia courts, and before the Patent Appeal Board, and acted for Steelhead LNG in infringement and impeachment actions against ARC Resources over floating at-shore LNG export terminals.
Pharmaceutical and life sciences disputes
Anand & Siu's drug-sector litigation covers PMNOC Regulations actions, damages and remedies claims after generic launches, judicial reviews of Health Canada decisions, and Patent Act suits between pharmaceutical companies. Kevin Siu has acted for brand and generic manufacturers in PMNOC proceedings, including for the defendants in Bayer v Samsung Bioepis, a 2024 biosimilar case involving seven aflibercept patents.
Health Canada regulatory advice
The firm gives advice and opinions on Health Canada decisions about health and safety, new and innovative drug designations and drug marketing. It also represents clients who make submissions to administrative bodies, and on judicial reviews and appeals of administrative decisions.
Trademark and copyright litigation
Trademark and copyright work runs through infringement, expungement and opposition proceedings at the Canadian Intellectual Property Office and the Federal Court, including branding, entertainment, social media and video game disputes. Nisha Anand acted for The Tragically Hip in a 2021-22 trademark and copyright infringement action over use of the song title "At the Hundredth Meridian" in Mill Street Brewery's products.
Trademark filings and brand portfolios
The firm's lawyers are registered trademark agents with experience running international brand portfolios. Nisha Anand became a Canadian trademark agent in 2010 and Kevin Siu in 2017, and Kevin Siu helps clients register and manage their brands around the world.
Freedom to operate and IP strategy
For businesses, Anand & Siu handles patent and trademark searches, IP reviews and freedom-to-operate opinions. It also helps spot high value areas to register and assert rights, earn money from IP, and negotiate licensing and royalty deals.
Artificial intelligence law
The firm advises on IP rights, ownership and privacy issues raised by generative AI, machine learning algorithms and how large language models are trained. In 2025 Kevin Siu appeared on TVO's The Rundown to talk about AI and copyright law and the lawsuit between Canadian media companies and OpenAI.
How Anand & Siu LLP works
Anand & Siu treats every case as different and plans each one to get the most out of the client's resources. Its method is to pin down the issues that matter most in a matter and put its effort there, and its representation rests on precision advocacy shaped to each client's strategy.
Reported cases
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Medexus Pharmaceuticals Inc v Accord Healthcare Inc, 2024 FC 424
Nisha Anand and Kevin Siu, with Justin Kearsley-Ho, appeared for the defendants. The court dismissed the infringement action, held the asserted claims obvious and declared the claims at issue of the Concentrated Methotrexate Solutions patent invalid.
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Nintendo of America Inc v King, 2017 FC 246
Kevin Siu acted for Nintendo in an application the court said raised novel issues under the 2012 Copyright Act amendments against circumventing technological protection measures. The court declared that copyright subsists in the 585 Nintendo games listed in the application.
Decisions where the firm's lawyers appeared as counsel, from public court records. Past cases don't predict future results.
Milestones & recognition
- In January 2026, Managing IP profiled Anand & Siu and the gap in the market the firm aims to fill.
- Nisha Anand is recognized for intellectual property litigation in Chambers Global and Chambers Canada, and is listed in the IAM 1000 as a recommended individual.
- Nisha Anand is also a member of the Trial Law Institute and the Diversity Law Institute.
- Kevin Siu is listed as Up and Coming for Intellectual Property Litigation in Chambers Canada (2027), and has been a Managing Intellectual Property IP Stars Patent Star since 2025, after Rising Star listings from 2017 to 2024.
- In 2026 Kevin Siu was a panelist and debater on artificial intelligence and intellectual property at the Intellectual Property Institute of Canada's Centennial Conference.
In the community
- Anand & Siu publishes the Canadian AI Case Tracker, a curated list of notable AI cases under way or decided in Canada, which it opened to the public in March 2026.
- Nisha Anand gives time to the local legal community by speaking on advocacy and IP panels, judging moots, teaching trial advocacy and mentoring young lawyers.
- The firm's articles include Kevin Siu's May 2026 analysis of the final Health Canada guidance on submission requirements for biosimilar biologic drugs.
Affiliations & connections
- Litigation Counsel of America: Nisha Anand is a Fellow of the Litigation Counsel of America.
Lawyers 3
The neighbourhood
Anand & Siu's office is in 181 University Avenue, the DBRS Tower, which together with 150 York Street makes up Adelaide Place, a Class A office complex. The tower stands in Toronto's financial district, connects straight to the PATH and its shops and restaurants, and can be reached from St Andrew subway station. The Courts Administration Service's Toronto registry office is at 180 Queen Street West.
Frequently asked questions
- Has Anand & Siu handled PMNOC litigation for both brand and generic drug makers?
- Anand & Siu's two partners both have. Kevin Siu has acted for brand and generic pharmaceutical companies in PMNOC Regulations proceedings, and Nisha Anand has represented both kinds of company in patent infringement actions and PMNOC proceedings.
- Can Anand & Siu take on a standards-essential patent or FRAND dispute?
- Anand & Siu partner Nisha Anand has litigated several cases on standards-essential patents and FRAND remedies in software and telecommunications, including acting for patentee Wi-LAN against Apple in 2021 to 2022 over SEPs in cellular communications.
- How do I suggest a decision for Anand & Siu's Canadian AI Case Tracker?
- Anand & Siu invites anyone who knows of further AI decisions to email Kevin P. Siu at kevin@anandsiu.com.
- Has Anand & Siu handled a trademark dispute that also went to the Trademark Opposition Board?
- Kevin Siu has, as counsel to Pliteq in an action for trademark infringement and false and misleading representations under the Trademarks and Competition Acts, and in a related Trademark Opposition Board proceeding over design marks for acoustic engineering products.
- Does Anand & Siu handle video game and software piracy matters?
- Anand & Siu has experience in video game and social media litigation. Kevin Siu's copyright work covers software piracy, technological protection measures, and protecting video games and media assets.
- How do I find Anand & Siu inside Law Chambers at 181 University Avenue?
- Anand & Siu is located within Law Chambers in Suite 2200, and the receptionist will direct visitors to the firm's offices. The main line is (416) 434-1434 and general email goes to contact@anandsiu.com.
Where to find them
181 University Ave, Suite 2200, Toronto, ON M5H 3M7 · 416-434-1434
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Intellectual PropertyThis listing was generated by AI from public sources in October 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on the firm’s own website. Verify licence status in the Law Society of Ontario directory ↗
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