Photo of Olivier F. Theard

Olivier F. Theard

Los Angeles
T: 213.617.5427
F: 213.620.1398


  • J.D., University of Southern California, 2001
  • B.A., Stanford University, 1998
  • Legal extern for U.S. District Judge Nora Manella, Central District of California. In this capacity, Mr. Theard conducted substantial legal research and drafted judicial opinions on a variety of topics, including constitutional law, federal civil procedure, environmental law and business/corporate law disputes.
  • California
Publications & News

Mr. Theard is a partner in the Business Trial Practice Group in the Los Angeles office of Sheppard, Mullin, Richter and Hampton LLP. 

Areas of Practice

  • Extensive experience assisting clients with environmental regulatory and permitting matters, including advice and compliance with State and Federal air quality, hazardous waste, and consumer products laws.
  • Experience in managing environmental investigation and remediation of contaminated sites.
  • Environmental litigation and administrative disputes under the Clean Air Act, CERCLA and other federal and state environmental laws.
  • Extensive experience preparing administrative petitions and representing clients in hearings and proceedings before the South Coast Air Quality Management District, the Department of Toxic Substances Control, and various California Regional Water Quality Control Boards.
  • Experience in Proposition 65 compliance and litigation.
  • Environmental due diligence in corporate transactions.
  • Experience in complex toxic tort litigation regarding alleged injuries from benzene, chromium, asbestos, dioxins and other chemicals.
  • Represent clients in business tort, contract and product liability matters.
  • Experience in recall proceedings before the National Highway Traffic Safety Administration and other consumer protection regulatory agencies.

Significant Matters

  • Mr. Theard has represented numerous clients in regulatory and administrative proceedings before the SCAQMD, DTSC, the Regional Boards and other agencies. Mr. Theard regularly provides advice to these clients regarding their regulatory obligations and compliance with environmental laws. Clients include Exide Technologies, Owens Illinois, California Steel and Anderson Hay.
  • Mr. Theard was an integral part of the legal team representing Venoco, Inc. in a major toxic tort litigation brought by alumni of Beverly Hills High School.  Venoco prevailed on summary judgment.  Mr. Theard has additional toxic tort defense experience on matters for Northrop Grumman Corporation, Consolidated Graphics, ExxonMobil and other companies. 
  • Mr. Theard has performed substantial work for ExxonMobil in a multi-district environmental litigation involving alleged groundwater contamination by the oxygenate MTBE. 
  • Mr. Theard has represented large building contractors in asbestos claims, owners and developers in construction defect cases, and homeowners in mold litigation.  Mr. Theard has defended clients involved in international environmental disputes regarding marine diesel engines, CERCLA, the Clean Air Act and related laws. 
  • Mr. Theard has provided advice and counsel on Proposition 65 and other chemical regulations, and has Proposition 65 litigation experience.
  • Representing client in significant recall matter before the National Highway Traffic Safety Administration.
  • On a pro bono matter, Mr. Theard successfully obtained asylum for a woman based on the domestic-violence she suffered in her home country.  Mr. Theard also routinely handles adoption cases for pro bono clients, many involving special needs children.


Climate Change & Clean Technology Law Blog Articles

Real Estate, Land Use & Environmental Law Blog Articles

Los Angeles Bar Association Articles

  • Highlights of the Contractor's State License Law, Los Angeles Bar Association publication (co-author), Winter 2005
  • 2003 Construction Industry Year in Review, Los Angeles Bar Association publication (co-author)
  • New Laws Regarding Underground Storage Tanks, 2002
  • 2001 Construction Industry Year in Review, Los Angeles Bar Association publication (co-author)


Media Mentions

Speaking Engagements

  • Understanding United States Products Liability and Environmental Law U.S./Mexico Bar Association 2012 Annual Conference
  • To Frack or not to Frack: An Introduction to Hydraulic Fracturing, LA County Bar Association 2012 Fall Symposium
  • Understanding the All Appropriate Inquires Requirements, Los Angeles County Bar Association


  • Firmwide leader of the Diversity and Inclusion Attorney Network
  • Executive Committee, Los Angeles County Bar Association Environmental Law Section
  • Member, American Bar Association
  • Member, Langston Bar Association (for African-American lawyers)
  • Member, USC Alumni Association
  • Member, Stanford Alumni Association