Partner
lauren.katzenellenbogen@fciplaw.com
Direct: 949 596 3157
Harvard Law School (J.D., 2002)
Duke University (B.S.E. Civil Engineering, 1999)
Magna cum laude, Tau Beta Pi Engineering Honor Society
Lauren is a registered patent attorney. She handles a broad spectrum of intellectual property disputes, from patents and trademarks to trade secrets and copyrights. With more than 20 years of experience, she has represented clients in litigation in more than 150 federal intellectual property cases, spanning industries such as software, medical devices, consumer goods, fashion, energy drinks, and entertainment.
Her practice includes high-stakes patent cases and trademark enforcement, including counterfeiting claims. She has represented clients in federal courts nationwide, including as a first chair trial attorney, on appeal before the U.S. Federal Circuit Court of Appeal, and before the Trademark Trial and Appeal Board. Clients have ranged from emerging startups to global brands, including Oakley, Monster Energy, Tesla, NASCAR, Bon-Ton Stores, Razor, Volcom, Mexicana Airlines, and I-Flow Corp.
World Trademark Review 1000 has several times named Lauren a "Leading Trademark Lawyer." In its 2026 edition, WTR reported that,
“Lauren delivers sharp, concise and insightful legal opinions that empower her clients to make informed decisions. She provides excellent assessments on the risks of trademark litigation.”
Before joining the firm, Lauren was an IP litigation partner at Knobbe Martens in Irvine, California, where she served as chair of the firm’s Consumer Products Litigation practice group.
Lauren is the vice-chair of the American Intellectual Property Law Association's Trademark Law Committee. She is the former vice-chair of the American Intellectual Property Law Association's Trademark Litigation Committee and is a past president of the Orange County Intellectual Property Law Association and the Orange County Bar Association's Intellectual Property Committee.
Awards and Honors
Recognized in World Trademark Review 1000: The World’s Leading Trademark Professionals guide (2024-2026)
Recognized in Lawdragon’s “500 Leading Global IP Lawyers” guide (2025)
Named a Southern California Super Lawyer (2018-2025)
Recognized in the “Best Lawyers 2025-2026 Guide” for Intellectual Property Litigation, Copyright Law, and Trademark Law in Best Lawyers in America (2024-2025)
Recognized as a “World IP Leader” by World Intellectual Property Review (WIPR) (2024)
Recognized by The Legal 500 “United States” for Trademark Litigation (2023-2025)
Named a “Southern California Rising Star” by Super Lawyers magazine for her work in intellectual property litigation (2005-2017)
Named one of the “Top Women Attorneys in Southern California” by Super Lawyers (2011-2015)
Recent Publications
"The United States' biggest copyright cases of the year," World Trademark Review (December 2025)
Co-Author, “2025 Patent And TM Policy At USPTO: What We Know So Far,” Law360 (January 2025)
Co-Author, “What’s In The USPTO Policy Pipeline This Year,” Law360 (January 2024)
“Design patent enforcers must mind procedural requirements for injunctive relief," , IAM (November 2022)
Quoted in, “Supreme Court to Examine Copyright Claim by Unicolors Against H&M,” an article published by California Apparel News. (July 2021)
Co-Author, “High Court Could Deter ‘Copyright Trolls’ In H&M Case,” which was published in Law360. (June 2021)
Quoted in, “Supreme Court Agrees to Hear H&M Case Versus So-Called ‘Copyright Troll’,” published by Sourcing Journal (June 2021)
“Design Protection in the Fashion Industry,” Orange County Business Journal Intellectual Property Supplement (July 2019)
“Alternative Software Protection in View of In Re Bilksi,” 50 Computer Law Reporter 150 (2009)
“Alternative Software Protection in View of In Re Bilksi,” 7 Nw. J. Tech. & Intell. Prop. 332 (2009)
Panelist/Speaker, “Debate on In Re Bilski,” Northwestern Journal of Technology & Intellectual Property Fourth Annual Symposium, Chicago, IL (2009)
Recent Speeches and Seminars
Panelist, “IP at the Supreme Court Series: Dewberry Group v. Dewberry Engineers,” American University Washington College of Law Program on Information Justice and Intellectual Property (December 2024)
Speaker, “Latest Issues in Trade Secrets Litigation: Enforcing to Protect IP and Defending to Protect Legitimate Competition,” Orange County Bar Association Intellectual Property & Technology Law and Business Litigation Joint Section Meeting (November 2024)
Panelist, “Daubert-Proofing Your Survey: Best Practices for Survey Evidence in Trademark Infringement and False Advertising Litigation,” AIPLA CLE Webinar (July 2022)
Panelist/Speaker, “Trademark Year in Review & Look Ahead,” LAIPLA Washington in the West, Los Angeles, CA (June 2022)
Panelist/Speaker, “Mid-Year Updates and The Best Practices & Latest Issues Related to Legal Ethics in Intellectual Property – Trademark,“ AIPLA Mid-Winter Institute, Rancho Mirage, CA (February 2022)
“Design Protection in the Fashion Industry: Design Patents, Trademarks, Trade Dress, and Copyright,” AIPLA Design Rights Boot Camp Session Materials (July 2019)
Moderator, “Trademark Infringement in Virtual Reality,” INTA Annual Meeting, Boston, MA (May 2019)
Moderator, “Establishing Remedies for Trademark Infringement” and “Best Practices for Presenting Your Trademark Case at Trial,” AIPLA Spring Meeting, Philadelphia, PA (May 2019)
Moderator, ABTL San Diego, “Nuts & Bolts: Written and Unwritten Rules of Civility,” San Diego, CA (November 2018)
Panelist/Speaker, “Panel on IP Valuation: How Much is it Worth? How Much Can You Get? How Can You Protect It?” OCBA, Newport Beach, CA (September 2018)
Moderator, INTA Roundtable: “Non-Traditional Marks and the Traditional Practice,” Irvine, CA (February 2017)