William Wu Photo
William Wu Photo
William Wu Photo

William (Bill) Wu maintains a dynamic and wide-ranging practice in competition law, antitrust, foreign investment and international trade.

Bill’s competition law practice includes the full range of competition law matters, including merger reviews, supplementary information requests, competition litigation, internal investigations, cartel defence and class actions.

As part of his international trade law practice, Bill works on anti-dumping and countervailing duty investigations involving the Canadian International Trade Tribunal (CITT) and the Canada Border Services Agency (CBSA).

Bill also advises clients in the manufacturing and retail sectors on compliance with federal and provincial marketing, advertising and consumer protection matters.

Bill is teaching Competition Law as an adjunct instructor at Queens’ University Faculty of Law.

Bill is also an active member of the leadership of the Canadian Bar Association’s National Competition Law Section and has assisted on a variety of competition and policy matters in the American Bar Association’s Section of Antitrust Law. He has testified before the House of Commons standing committee on industry, science and technology regarding the Competition Act.

Representative Matters


  • Acting as Canadian counsel to ASSA ABLOY in its US$4.3 billion acquisition of Spectrum Brands’ Hardware and Home Improvement division
  • Acted for Paper Excellence in its C$3.0 billion acquisition of Domtar
  • Acted for West Fraser Timber in its C$4.0 billion acquisition of Norbord, which created a diversified global forest product producer
  • Acted for American Iron & Metal Company in its acquisition of TMR Recovery, which led to the Competition Bureau issuing a guidance regarding the “failing firm defence”
  • Acting as Canadian counsel for Raytheon Company in its all-stock merger of equals with United Technologies Corporation
  • Acted for Thoma Bravo in its acquisition of Aucerna and the negotiated divestiture of the oil and gas reserve software product, which is the first merger challenge since the appointment of the new Commissioner of Competition earlier in 2019

Class Actions

  • Acting for a global shipping company defending civil cartel/conspiracy class action proceedings relating to “Roll-on, Roll-off” Car Carriers
  • Acting for a leading electronics manufacturer defending civil cartel/conspiracy class action proceedings relating to Capacitors

Marketing & Advertising

  • Acted for Hudson’s Bay Company in the Competition Bureau investigation of alleged misleading advertising practices relating to mattresses
  • Acted for Hertz and Dollar Thrifty in the Competition Bureau investigation of alleged advertising practices

International Trade

  • Acting for Max-Atlas Équipement International Inc. in its complaint regarding dumping and subsidizing of Container Chassis from China
  • Acted for Palliser Palliser Furniture Ltd., EQ3 Ltd., Elran Furniture Ltd. and Jaymar Furniture Corp. in their successful complaint regarding dumping and subsidizing of Upholstered Domestic Seating from China and Vietnam

Speaking Engagements

No-Poach and Wage-Fixing – Cross-border Convergence or Divergence?, American Bar Association - Webinar

December 1, 2021

Antitrust in the Labour Market, Canadian Bar Association – Teleseminar

December 2018

Anticompetitive Effects of Horizontal Shareholding, Canadian Bar Association – Teleseminar

December 2017

Teaching Engagements

  • Winter 2022 – Competition Law – Queens’ University Faculty of Law


Media Mentions

Directorships & Affiliations

  • Law Society of Ontario
  • Canadian Bar Association (Chair, Criminal Matters Committee, Competition Law Section)
  • American Bar Association, Section of Antitrust Law
  • Federation of Asian Canadian Lawyers

Education & Admissions

Called to the Ontario bar
Joint JD / MA EconomicsUniversity of Toronto Faculty of Law
BA (Honours), EconomicsUniversity of British Columbia


Insights (17 Posts)

Featured Insight

Round One of Competition Act Amendments Passed; National Security Review Regime Amended

New amendments to the Competition Act were passed today as part of the budget implementation bill.

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Jun 27, 2022
Featured Insight

Competition Act Amendments Introduce New Criminal Offence Against Wage-Fixing and No-Poach Agreements

New proposed amendments to the Competition Act will criminalize agreements between employers regarding wages, working conditions and hiring practices.

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May 3, 2022
Featured Insight

Significant Changes Coming to Canada’s Competition Act

The Canadian federal government has introduced a series of significant changes to Canada's Competition Act.

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May 3, 2022
Featured Insight

Getting the Deal Through – Cartel Regulations 2022

Lexology Getting the Deal Through – Cartel Regulations 2022 provides a detailed explanation of how cartel regimes work in practice, including recent developments over the past year and an overview of future changes expected in each jurisdiction.

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Jan 26, 2022
Featured Insight

Competitor Collaboration Guidelines: Competition Bureau Updates Key Guidance

On May 6, 2021, the Competition Bureau released updates to its Competitor Collaboration Guidelines.

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May 10, 2021
Featured Insight

Canadian Government Expands National Security Guidance

On March 24, 2021, Canada’s Minister of Innovation, Science and Industry announced that the government updated its National Security Guidelines.

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Mar 25, 2021
Featured Insight

Competition Bureau Grounds FlightHub’s Misleading Advertising

On February 24, 2021, the Competition Bureau concluded its investigation into alleged misleading advertising by FlightHub by way of a consent agreement.

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Mar 3, 2021
Featured Insight

Getting the Deal Through – Cartel Regulations 2021

As the world grapples with the unprecedented health and economic challenges arising from the corona virus pandemic, competition law enforcement agencies will have further challenges in deploying scarce resources. 

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Feb 22, 2021
Featured Insight

Do Not Go Directly to Jail – Just Yet Anyway: Competition Bureau Confirms its View that Buy-Side Agreements between Competitors are not Criminally Unlawful

On November 27, 2020, the Competition Bureau clarified its view that the criminal cartel provisions of the Competition Act do not apply to buy-side agreements.

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Nov 30, 2020
Featured Insight

Canada Enters into Cooperation Framework with the Competition Enforcement Agencies of the “Five Eyes” Countries

The new cooperation framework will enhance the Canadian Competition Bureau's ability to cooperate with foreign competition agencies.

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Sep 28, 2020
Featured Insight

Competition Bureau Invites Comments to Revisions to the Competitor Collaboration Guidelines

The Competition Bureau recently released a draft revision of the Competition Collaboration Guidelines and is
inviting comments in a public consultation.

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Aug 5, 2020
Featured Insight

ATPDR: Limited Exemptions for Foreign Air Carriers

On June 1, 2020, the CTA issued the Accessible Transportation for Persons with Disabilities Regulations Application Exemption Order.

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Jun 23, 2020
Featured Insight

CN Rail Acquires H&R Transport – Competition Analysis

The Competition Bureau's review of the CN/H&R highlights its attention to non-notifiable deals, its use of oral examinations and the efficiencies defence.

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May 1, 2020
Featured Insight

Need to Collaborate with Competitors to Respond to the COVID Crisis? Competition Bureau is Ready to Provide Guidance

Recognizing the need to provide certainty to the business community during the COVID crisis, the Competition Bureau is ready to provide guidance.

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Apr 13, 2020
Featured Insight

Cartels in a Time of COVID

The current COVID-19 crisis is having a significant impact on businesses all across Canada.

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Apr 6, 2020
Featured Insight

YVR Makes Safe Landing: Competition Bureau Abuse of Dominance Case against the Vancouver Airport Authority is Dismissed

On October 11, 2019, the Competition Tribunal dismissed the Competition Bureau's abuse of dominance allegations
against Vancouver Airport Authority.

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Nov 12, 2019
Featured Insight

Canadian National Security Reviews: 10 Takeaways

Foreign Investment in Canada is subject to review for National Security concerns. Our Brief outlines common issues which investors may wish to consider in planning transactions

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Oct 7, 2019