Sergei Lemberg, Esq.

Managing Attorney Lemberg Law

Sergei Lemberg founded the firm to champion the rights of consumers and hold corporations accountable.

Sergei Lemberg, the firm’s founding attorney, has earned a reputation as a tough and tireless advocate with a passion for helping consumers fight for the compensation they deserve. He stands up to car makers, insurance companies, debt collection agencies, robocallers, and other players in Big Business. He has been recognized as the “most active consumer attorney” four of the last seven years.

In 2020, Mr. Lemberg represented Noah Duguid in the United States Supreme Court in the case entitled Duguid v. Facebook.

Mr. Lemberg has been interviewed about consumer law issues by many media outlets, including the New York Times, AOL, the Wall Street Journal, FOX News, ABC News, MSN, the International Business Times, the Los Angeles Times, Newsweek, and Consumer Reports. He frequently speaks at industry events, including those held by PACE (Professional Association for Customer Engagement). He is also a sought-after presenter at events such as the National Conference on Consumer Finance (Class Actions and Litigation).

See media coverage

From humble beginnings

Mr. Lemberg arrived to the United States as a refugee from the former Soviet Union in 1989 at the age of 15. He attended Brooks School in North Andover, Massachusetts, on scholarship, then continued on to college at Brandeis University, where he earned a B.A. in Economics with a minor in Business in 1997. He obtained his law degree from the University of Pennsylvania Law School in 2001. After several years working at large firms in Boston, New York, and Connecticut, Mr. Lemberg launched Lemberg Law.

He started the firm in a one-room office 15 years ago and has grown it into a leading national consumer law firm with more than 30 employees.

Notable cases

Mr. Lemberg has been lead counsel in a number of consumer class actions, including:

  • Duchene vs. Westlake Services., LLC, No. 13-01577, 2016 WL 6916734 (W.D. Pa. July 14, 2016) (TCPA class settlement of a $10 million)
  • Brown v. Rita’s Water Ice Franchise Co. LLC, No. 15-3509, 2017 WL 1021025 (E.D. Pa. Mar. 16, 2017) (TCPA class settlement of a $3 MM)
  • Larson v. Harman Management Corporation et al., No. 16-219 (E.D. Cal. June 19, 2020) (ECF No. 210) (finally approving $4MM class action settlement and certifying TCPA class)
  • Horton v. Navient Solutions, Inc., No. 17-1855-BLS2 (Mass. Super. Feb. 3, 2020) (preliminarily approving $4.5MM settlement and conditionally certifying class asserting violations of 940 CMR § 7.04(1)(f)
  • Horton et al. v. Cavalry Portfolio Services, LLC, No. 13-307 (S.D. Cal. April 14, 2020) (ECF No. 292) (preliminarily approving settlement comprised of $6.15 MM in cash and up to $18MM in debt relief and conditionally certifying TCPA class)
  • Gero v. ADT LLC d/b/a ADT Security Systems; No. 1982CV01424 (Mass. Super. July 10, 2020) (preliminarily approving $1.347MM settlement and conditionally certifying class asserting violations of 940 CMR § 7.04(1)(f));
  • Carlson v. Target Enterprise, Inc., 2020 WL 1332839 (D. Mass. Mar. 23, 2020) (finally approving $2.275MM class action settlement and certifying class asserting violations of 940 CMR § 7.04(1)(f))
  • O’Neill v. Carrington Mortgage Services, LLC, No. 1:19-cv-10643-ADB (D. Mass. Feb. 27, 2020) (ECF No. 45) (preliminarily approving $237,500 settlement and conditionally certifying class asserting violations of 940 CMR § 7.04(1)(f))
  • Salisbury v. Central Credit Services, Inc., No. 18-2625G (Mass. Super. June 14, 2021) (finally approving  $295,000 class action settlement and certifying class asserting violations of 940 CMR § 7.04(1)(f))
  • Russell v. Rent-A-Center, Inc. d/b/a Acceptance Nos, No. 1984CV00382-BLS (Mass. Super. June 3, 2021) (finally approving  $417,050 class action settlement and certifying class asserting violations of 940 CMR § 7.06(2)(b))
  • In Re: Convergent Telephone Consumer Protection Act Litigation, No. 13-md-02478 (D. Conn., November 10, 2016) (ECF No. 268) (5.5 MM class settlement).
  • Munday vs. Navy Federal Credit Union, No. 15-cv-01629 (C.D. Cal., July 14, 2017) (ECF No. 60) (TCPA class settlement of $2.75 MM)
  • Vinas vs. Credit Bureau of Napa County Inc., No. 14-cv-3270 (D. Md. February 22, 2017) (ECF No. 112) ($300,000 FDCPA settlement)
  • Seekamp vs. It’s Huge, Inc., No. 09-00018, 2012 WL 860364 (N.D.N.Y. Mar. 13, 2012) (automobile fraud class action);
  • Evon vs. Law Offices of Sidney Mickell, 688 F.3d 1015 (9th Cir. 2012) (FDCPA class action)
  • In re Chemtura, Bankr., S.D.N.Y. 09-11233 (representation of nearly 1,000 former Chemtura employees).

Mr. Lemberg is an experienced appellate advocate, having argued in the First, Second, Third, Fourth, Fifth, Seventh, and Ninth Circuit Courts of Appeal, as well as in the Massachusetts Supreme Court. His most recent appellate victories include Evon vs. Law Offices of Sidney Mickell, 688 F.3d 1015 (9th Cir. 2012); Waite vs. Clark Cty. Collection Serv., LLC, 606 F. App’x 864 (9th Cir. 2015); Scott vs. Westlake Servs. LLC, 740 F.3d 1124 (7th Cir. 2014); Pollard vs. Law Office of Mandy L. Spaulding, 766 F.3d 98 (1st Cir. 2014); Armata vs. Target Corp., 480 Mass. 14, 99 N.E.3d 788 (2018); and Manuel vs. NRA Grp. LLC, 722 F. App’x 141 (3d Cir. 2018); Twumasi-Ankah v. Checkr, 954 F.3d 938 (6th Cir. 2020)

Mr. Lemberg co-authored the definitive compilation of form complaints in Connecticut, Connecticut Civil Complaints for Business Litigation, contributing form complaints for the Lemon Law and Auto Fraud sections. He is a former Chair of the Consumer Law Section of the Connecticut Bar Association, holding that position from 2014 to 2015.

Personal interests

Outside of practicing law, Mr. Lemberg is the proud father of two boys. He loves the Red Sox, coaching soccer, raising chickens, gardening, and pickling vegetables.


Degrees
  • University of Pennsylvania Law School – J.D. (2001)
  • Brandeis University – B.A. in Economics with a minor in Business (1997)
State Bar Admissions
  • Massachusetts (2002)
  • New York (2002)
  • Connecticut (2005)
  • Pennsylvania (2014)
  • Georgia (2014)
Federal Court Admissions
  • District of Massachusetts
  • District of Connecticut
  • All Districts – New York, Illinois, Oklahoma, Maryland, Arkansas, Michigan and Nebraska, Northern and Middle Districts of Georgia, Western District of Texas, Eastern District of Missouri
Appeals Court Admissions
  • First Circuit Court of Appeals
  • Second Circuit Court of Appeals
  • Third Circuit Court of Appeals
  • Fourth Circuit Court of Appeals
  • Fifth Circuit Court of Appeals
  • Ninth Circuit Court of Appeals
  • Eleventh Circuit Court of Appeals
Positions
  • Former Chair, Consumer Law Section, Connecticut Bar Association
Publications
  • Connecticut Civil Complaints for Business Litigation – Contributing Author – Lemon Law and Auto Defect Litigation
  • Seize Your Power: How to Stop Debt Collectors NOW – Author

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