Posternak Blankstein & Lund LLP is now Arent Fox. Read the press release

Diane M. Lambillotte

Diane is Counsel in the Intellectual Property practice.
Diane M. Lambillotte, Counsel, Los Angeles at Arent Fox

Diane has extensive experience in the procurement and protection of intellectual property assets across various industries, such as retail, restaurant, food and beverage services, including beverage alcohol, sports and entertainment, finance and banking, pharmaceuticals, manufacturing, advertising and publishing, telecommunications, and a variety of consumer products and luxury goods. Her clients include, among others, the oldest and largest privately-held coffee and tea retailer in the United States, one of the country’s oldest racing organizations and the largest domestic content and advertising network for local businesses.

Client Work

Diane provides counseling, portfolio management, and assistance to clients in connection with all aspects of obtaining, managing, and enforcing trademark rights, both domestically and internationally. This includes prosecuting applications for the registration of trademarks and post-registration maintenance filings with the US Patent and Trademark Office and under the Madrid Protocol; working with foreign counsel to obtain registration and conduct enforcement of marks internationally; counseling clients on the selection and use of marks, including in advertising materials; participating in inter partes proceedings before the Trademark Trial and Appeal Board to obtain, defend, and enforce trademark rights; and handling cease and desist matters involving trademark, copyright, and domain name issues.

Diane has also done extensive pro bono trademark work for various non-profit organizations, including those in the fields of laws and policy initiatives affecting women and girls in the areas of health, employment, economic security, and education; cancer awareness, research, and education; children’s advocacy and issues; and employment job skills and training.

Previous Work

Prior to joining Arent Fox, Diane was counsel in the Los Angeles office of an international law firm, where she focused on procuring and protecting trademark rights, both domestically and internationally, for a variety of clients.

Professional Activities

Diane is a member of the International Trademark Association (INTA) where she has served on numerous committees.

Publications, Presentations & Recognitions

Diane’s recent publications and presentations include:

  • Author, "Incontestability of Marks in the United States and Canada: A Comparison of Perspectives and Purposes," INTABulletin, August 2014 
  • Panelist, Bridgeport CLE Program, “Understanding IP Law for In-house Counsel & Non IP Lawyers,” November 2013 
  • Panelist, “Overview of 2010 Developments in Lanham Act, Social Media, Trademark and Copyright Law,” January 2011 (Presentation and Webinar)
  • Panelist, “IP/Technology: Year in Review and Trends for 2010,” January 2010 (Presentation and Webinar)
  • Table Topic Facilitator, “USPTO Practice and Filing Tips,” INTA Annual Meetings, 2010 and 2007
  • Moderator, INTA Roundtable Programs, Los Angeles and San Francisco
  • Author of various articles, INTA Bulletin, 2008-2009

Life Beyond the Law

Diane has been involved in various community activities and organizations for several years.  These include serving on the Board of Soroptimist International of Glendale, a global volunteer organization that improves the lives of women and girls through programs leading to social and economic empowerment, serving as a Delegate to a California State political party appointed by a member of the California State Assembly, and serving, including as Chair, on the Commission on the Status of Women for the City of Glendale, California.  She was also the recipient of a 2019 Women in Law award at the 25th State Senate District Women in Business Legislative Update & Awards event hosted by California State Senator Anthony J. Portantino, honoring women who have contributed to the economic vitality, diversity and greater good of the of the community encompassed by the 25th Senate District.

  • Practices
  • Bar & Court Admissions
    • California Bar
    • US District Court, Central District of California
  • Education
    Loyola Law School
    Production Editor, Entertainment Law Journal, 1992-93; Staff Writer, Entertainment Law Journal, 1991-92
    California State Polytechnic University, Pomona
    magna cum laude