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Mimi S. Dennis

Phone: +1 202.624.2538
1001 Pennsylvania Avenue NW
Washington, DC 20004-2595

Mimi S. Dennis is a counsel in the firm’s Washington, D.C. office. She is a member of the firm’s Mass Tort, Product, and Consumer Litigation and Product Risk Management groups. Mimi represents clients in a wide range of commercial and product liability litigation and product regulatory counseling matters. She has experience defending clients in multidistrict proceedings, arbitrations, and other complex litigation and has first chair bench and jury trial experience. She has handled regulatory matters before various federal and state agencies, including FDA and EPA, and has counseled food, beverage, medical device, and pharmaceutical industry clients on liability prevention and compliance matters. Her tort and product liability experience spans various industries, including the construction, medical device, pharmaceutical, automotive, and energy industries, and her clients include product manufacturers, distributors, importers, and retailers.  

Mimi’s recent tort litigation experience includes:

  • Defending a Fortune Global 500 health care services company in products liability cases involving claims of pharmaceutical manufacturing defects resulting in multiple deaths and serious injuries.
  • Defending a major oil company in a multidistrict litigation involving claims brought by municipalities, water districts, and state sovereigns across the country.
  • Defended a major oil company in a consolidated gasoline oxygenate product liability litigation alleging injuries to water resources, including an action brought by the New Jersey Department of Environmental Protection seeking natural resource damages on a statewide basis for alleged impairment of groundwater resources.
  • Defended a major oil company in an arbitration regarding LNAPL contamination at a petroleum storage terminal. 

She has also published several articles on environmental and civil litigation matters, ranging from a discussion of class action certification to defenses in pharmaceutical failure-to-warn cases.

In addition, Mimi has an active pro bono practice focused on providing legal services to immigrant women and girls who are survivors of gender-based violence. She has also served as a guardian ad litem in D.C. Superior Court. 

Mimi received her J.D. from Georgetown University Law Center. While at Georgetown, she served on the editorial board of the Georgetown International Environmental Law Review and was a student attorney representing D.C. tenants in the Law Students in Court clinic. She graduated cum laude from Georgetown University in 1996, where she studied international affairs and foreign service.


  • Georgetown University, B.S. (1996) cum laude
  • Georgetown University Law Center, J.D. (2000)


Admitted to practice: District of Columbia, Maryland

View More

"COVID-19 Product Liability And The 'Innocent Seller'," Law360 (June 8, 2020). Authors: Daniel T. Campbell, Chalana Netasha Damron, Mimi S. Dennis, William C. Pellett, and Emily Tucker.
"Recent EPA Developments and Their Impact on Retailers," Crowell & Moring's Consumer Products Law Observer (March 25, 2020). Authors: Warren Lehrenbaum and Mimi S. Dennis.
"Who You Gonna Call? (Just Don’t Use an Autodialer!)," Crowell & Moring's Retail & Consumer Products Law Observer (May 29, 2018). Author: Mimi S. Dennis.
"Private Eyes: New Federal Privacy Regulations and Their Impact on Contractors," ABA Division 13 Newsletter, Volume 3, Issue 1 (2017). Author: Mimi S. Dennis.
"Contracts Are Still King After PA Oil Drilling Case," Law360 (February 9, 2015). Author: Mimi S. Dennis.
"7th Circuit Reminder on Challenging a Class's Predominance," Law360 Expert Analysis (February 26, 2014). Author: Mimi S. Dennis.
"In Support Of Learned Intermediary Doctrine," Law360 (October 2012). Author: Mimi S. Dennis.

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Crowell & Moring LLP is an international law firm with more than 500 lawyers representing clients in litigation and arbitration, regulatory, and transactional matters. The firm is internationally recognized for its representation of Fortune 500 companies in high-stakes litigation, as well as its ongoing commitment to pro bono service and diversity. The firm has offices in Washington, DC, New York, Los Angeles, San Francisco, Orange County, London, Brussels, and Shanghai.

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