About Us

Danielle L. Perry


Danielle Perry

Danielle L. Perry is a partner at Mason LLP, and offers nearly a decade of class action litigation experience to the benefit of her clients. Graduating from the University of California, Berkeley in 2010 and from Loyola Law School, Los Angeles in 2013, Ms. Perry is licensed to practice in the State of California, District of Columbia, and in numerous federal district courts across the country as well as the U.S. Court of Federal Claims, and the Fifth, Seventh, and Federal Circuit Courts of Appeals. While Ms. Perry originally focused her career on employment law class actions, after her first few years of practice she expanded her experience and resume to cover numerous data breach and consumer class actions as well. Ms. Perry, either as an individual or as a member of her firm, has been named class counsel in numerous cases including: Richardson v. Overlake Hospital Medical Center et al., Case No. 20-2-07460-8 SEA (King County Superior Court, State of Washington (appointed class counsel in data breach class action involving approximately 109,000 individuals; final approval granted Sept. 2021); Cece et al. v. St. Mary’s Health Care System, Inc. et al., Civil Action No. SU20CV0500 (Superior Court of Athens-Clarke County, Georgia) (appointed class counsel in data breach case involving 55,652 people; final approval granted April 2022).

            Ms. Perry also has extensive experience providing support to appointed committees in MDL cases across the country. See, e.g. In re DevaCurl Litigation, Master File No. 1:20-cv-01234-GHW (S.D.N.Y.) (final approval granted January 3, 2022) (Mason LLP served as court-appointed Co-Lead Counsel and Ms. Perry undertook significant work for clients and class members with extensive hair loss, leading client interviews, drafting pleadings, and preparing settlement and settlement approval papers); In re Hill’s Pet Nutrition, Inc. Dog Food Prods. Liab. Litg., MDL No. 2887, No. 2:19-md-02887 (D. Kan.) (final approval granted Oct. 2021) (Mason LLP served as court-appointed Co-Lead Counsel and Ms. Perry played a significant roll for clients and class members who purchased dog food with sometimes lethal amounts of vitamin D, participating in client intake, discovery, and preparing settlement and settlement approval papers); In re: Marriott International Customer Data Security Breach Litigation, MDL No. 19-md-2879 (Dist. Md.) (Ms. Perry contributed to plaintiff interview process and drafting of the consolidated amended complaint in data breach case); In re U.S. Off. of Pers. Mgmt. Data Security Breach Litig., 266 F. Supp. 3d 1 (D.D.C. 2017) (Mason LLP serves as Liaison Counsel, and Ms. Perry has completed research assignments in support of and at the request of Lead Counsel in data breach case). Most recently, Ms. Perry has also been appointed to the Leadership Development Committee in In re: SoClean Inc. Litigation, MDL No. 3021 (Dist. PA), where she works closely with Lead Counsel in all areas of litigation and fights for consumers rights pertaining to the purchase of defective and/or unsafe products.