I have been engaged as an expert witness by the following firms ...

• Kirkland & Ellis LLP
• Quinn, Emanuel, Urquhart, & Sullivan, LLP
• Williams & Connolly LLP
• Boies Schiller & Flexner LLP 
• Irell & Manella LLP 
• Susman Godfrey LLP
• Hunton & Williams LLP
• Ballard Spahr LLP
• Federal Trade Commission (Division of Advertising Practices)
• In-house Counsel (Tucows)(Canada)
• In-house Counsel (Yahoo!)
• Pinsent Masons LLP (United Kingdom)
• pro se litigant (Australia)
• Arnold & Itkin LLP
• Atlas Law PLLC
• Beattie Padovano, LLC
  
• BerlikLaw, LLC
• Bracewell & Giuliani LLP
• Busch, Zurbuch & Thompson, PLLC
• Choate, Hall & Stewart LLP 
• Denko Coburn Lauff LLP
• DiNovo Price Ellwanger & Hardy LLP
• Dykema Cox Smith
• Gardere, Wynne & Sewell, LLP
• Greene Broillet & Wheeler LLP
• ​Jaffe, Weissing, Edwards, Fistos & Lehrman, P.L.
• Kabateck, Brown, Kellner LLP
• Kepner, Kepner & Corba, P.C.
• Law Offices of James G. Schwartz P.C.
• McKool Smith Hennigan, P.C.
• Nix, Patterson, & Roach, LLP
• Patterson Belknap Webb & Tyler LLP
• Robbins, Geller, Rudman, & Dowd, LLP
• Rymer, Moore, Jackson, & Echols PC
• Searcy Denney Scarola Barnhart and Shipley, P.A.
• Seeger Weiss LLP
• Watts & Guerra LLP
• Young Basile Hanlon & MacFarlene P.C.                                                                                                                                                                                                                                                                                                                               (current as of 2019)   Bernard J. Jansen

Subject matter expertise
​Subject matter expertise in ad replacement expert witness, affiliate advertising expert witness, benefits of search engines expert witness, content advertising expert witness, cookie stuffing expert witness, co-registration advertising expert witness, cross screens expert witness, demographic targeting expert witness, domain parking expert witness​, dual screens expert witness, how people search expert witness, how people view search results expert witness, how search engines work expert witness, information retrieval expert witness, image searching expert witness, keyword advertising expert witness, online advertising expert witness, online branding expert witness, online copyright expert witness, online marketing expert witness, online reviews expert witness, online trademarks expert witness, online trademark infringement expert witness, pay-per-click expert witness, PPC expert witness, online reputation management expert witness, search engine optimization expert witness, SEO expert witness, search engine marketing expert witness, second screens expert witness, SEM expert witness, search engines expert witness, social media expert witness, tracking code replacement expert witness, trademark issues in online advertising expert witness, trademark issues in web searching expert witness, web analytics expert witness, web page archiving expert witness, web page viewing expert witness, web search expert witness, webpage ranking  expert witness​​