skip to main content
Experience List
  • Email Page
  • Create PDF
  • Print Page

Admitted to Practice

  • Washington
  • California
  • U.S. Court of Appeals 9th Circuit
  • U.S. District Court Western District of Washington
  • U.S. District Court Eastern District of Washington
  • U.S. District Court Central District of California
  • U.S. District Court Northern District of California
  • U.S. District Court Eastern District of California

Bonnie E. MacNaughton

Bonnie MacNaughton is a seasoned litigator with over three decades of experience in civil and criminal litigation. She has been lead counsel in over 40 federal criminal and civil trials, and has handled hundreds of civil and criminal court hearings, including appellate arguments before the U.S. Court of Appeals for the 9th Circuit. Bonnie focuses on intellectual property and cybercrime litigation, and internal and third-party corporate investigations.

Bonnie is a former federal prosecutor specializing in domestic and international narcotics trafficking, money laundering, and asset forfeiture matters in the Western District of Washington and Central District of California. Bonnie was also an Assistant General Counsel in Microsoft’s Digital Crimes Unit where she led Microsoft’s North American anti-piracy team for over a decade.

As a member of the International Anti-Counterfeiting Coalition’s board of directors since 2002, Bonnie works closely with brand protection leaders on global strategies and programs to safeguard intellectual property and corporate assets.

Bonnie is a frequent speaker on intellectual property protection, cybercrime, and technology issues.

Representative Experience

Cybercrime, Piracy, and Anti-Counterfeiting Litigation
Significant experience in building cases and litigating claims of copyright infringement, trademark infringement, false advertising and designation of origin, unfair competition, racketeering, computer fraud and abuse, trade secret theft, trafficking in counterfeit and illicit access devices, circumventing copyright protections, conspiracy, and common law fraud.

Counsel for Microsoft in numerous lawsuits against cybercriminals and software pirates, including over a dozen John Doe lawsuits to identify the perpetrators of unlawful activity.

Counsel for Amazon and other brands against multiple sellers of counterfeit products on

Counsel for Fortune 100 clients in both asserting and defending end-user piracy and software compliance claims.

Internal and Third-Party Investigations and Legal Support in Criminal Referrals
Counsel for Fortune 100 clients in internal and third-party investigations and related law enforcement referrals, including securing restitution from criminal defendants and restoration and remission of forfeited assets.

Corporate Supply Chain Investigations and Dispute Resolution
Counsel for Fortune 100 clients in corporate supply chain investigations to remediate leakage and theft and resolve related liability issues.

Professional & Community Activities

  • Executive Board of Directors, 2009-2014; Board of Directors, 2002-present – International Anti-Counterfeiting Coalition
  • Board of Directors, Thomas C. Wales Foundation, 2004-2010
  • Chair, DWT Women’s Affinity Group, 2015-present
  • Chair, Retention and Professional Development Working Group for Microsoft Legal & Corporate Affairs’ Diversity Committee, 2009-2012
  • Chair, 2018; Member, 2014-present – United Way of King County’s Legal Steering Committee
  • Co-President, Redmond High School Varsity Fastpitch Booster Club

Professional Recognition

  • Named as one of the "Best Lawyers in America" in Litigation - Intellectual Property by Best Lawyers, 2018-present