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Lauren Keller Katzenellenbogen

Lauren Katzenellenbogen litigates all types of intellectual property disputes, including claims pertaining to patents, trademarks, unfair competition, trade secrets and copyrights. For nearly two decades, she has represented clients in litigation involving an array of industries, including computer software, medical and mechanical devices, consumer products, fashion, energy drinks and entertainment.

With a practice that includes high-stakes patent litigation, trademark and counterfeiting claims, Lauren has served as counsel in numerous cases in federal courts across the U.S., as well as before the Trademark Trial and Appeal Board (TTAB). She has represented clients that range from innovative start-ups to established brands, including Oakley, Monster Energy, Tesla, NASCAR, Bon-Ton Stores, Razor, Volcom, Specialized Bicycle, Mexicana Airlines and I-Flow Corporation.

Lauren is co-chair of the firm’s Consumer Products Litigation team.  A focus on creative solutions, attention to detail and compelling arguments drives every action Lauren takes. Competitive by nature, Lauren’s personal drive to win allows her to consistently deliver potent strategies that position her client to succeed in and out of court.

Active in the community in which she lives and works, Lauren is a past-president of the Orange County Intellectual Property Law Association (OCIPLA) and currently serves as Chair of the American Intellectual Property Law Association’s Trademark Litigation Committee.

Harvard Law School, J.D.
Duke University, B.S., Civil Engineering, Tau Beta Pi Engineering Honor Society
State Bar of California
U.S. Court of Appeals for the Federal Circuit
U.S. District Court – Central District of California
U.S. Patent and Trademark Office

Aesthetic & Cosmetic Biotechnology

Personalized Medicine

Chemical, Industrial & Materials

Automation & Robotics

Building Construction

Building Products & Materials

Concrete & Aggregates

Construction & Home Improvement

Cosmetics & Personal Care Products





Pool & Spa



Consumer Products & Services

Aesthetics & Personal Care Products

Food & Beverage

Restaurants & Hospitality

Sporting Goods & Recreation

Electrical, Semiconductor & Computer Technology

Software & IT


Clean Technology


Drinking Water Treatment

Energy Conservation

Energy Efficient Technologies

Green Building & Construction



Water Conservation

Wind Power

Fashion & Beauty








Media, Advertising & Entertainment


Amusement Parks



Film & Television

Literary Works

Mobile Applications


Online Games

Social Media


Video Games and Interactive Entertainment

Medical Devices & Procedures

Aesthetics & Implants


Dermatology & Aesthetics

Drug Eluting & Drug Delivery Devices

Infusion Pumps


Minimally Invasive & Endoscopic Procedures


Prosthetics & Orthotics

Sports Medicine

Stents, Valves, & Delivery Systems

Wound Care

Transportation & Vehicles

Aerospace & Space Technology

Automotive Transportation & Powersports

Electronics (Audio / Video, Communication, Navigation, Security)

Personal Motorized Recreation Vehicles (ATVs, Snow Vehicles, Personal Watercraft)

Antitrust & Competition Litigation
Appellate Litigation
Copyright Litigation
Copyright Litigation
Covered Business Method (CBM)
Design Patents
False Advertising Litigation
False Advertising Litigation
Inter Partes Review (IPR)
Patent Litigation
Patent Strategy & Prosecution
Patent Trial & Appeal Board (PTAB) Litigation
PTAB Overview
Trade Secret
Trade Secret & Employee Mobility Litigation
Trade Secret & Employee Mobility Litigation
Trade Secret Protection Advice, Counseling, Employee & Nondisclosure Agreements
Trademark & Brand Protection
Trademark and Brand Protection Litigation
Trademark and Brand Protection Litigation
Trademark Enforcement
Trademark Trial & Appeal Board (TTAB) Litigation 
TTAB Proceedings
Unfair Competition Litigation
Unfair Competition Litigation

  • Recognized by The Legal 500 “United States” for Trademark Litigation (2023)
  • American Intellectual Property Law Association (AIPLA), Chair Trademark Litigation Committee 2020-present
  • 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)


Professional Memberships: 

  • American Intellectual Property Law Association (AIPLA) 
  • Orange County Intellectual Property Law Association, President (2019)
  • National Association of Women Business Owners (NAWBO)
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