Quinn emanuel trial lawyers

Hutnyan, Diane C.

Diane C. Hutnyan (see Diane Cafferata)



Diane Cafferata is a partner in the firm's Los Angeles office.  Ms. Cafferata’s practice involves a wide variety of complex commercial litigations in federal and state courts, where she represents both plaintiffs and defendants.

Ms. Cafferata’s background as a JD/MBA helps her develop creative strategies for advancing her client's interests at every stage, before, during or after litigation.  She focuses on the merits of a dispute from its inception, and uses that focus to conserve her client's resources while getting them superior results  ̶  for example, helping them avoid trial or motion practice entirely.  Her practice is wide-ranging, including substantial experience in patent and other intellectual property matters, class actions, derivatives and other financial matters, real estate disputes, and contract and business tort cases.  Ms. Cafferata has been repeatedly recognized as one of Southern California's Super Lawyers by Los Angeles Magazine.   

Ms. Cafferata also takes great pride in developing young lawyers and building teams that impress clients, judges and opposing counsel alike.

  Representative Clients

  • Abbott Laboratories
  • American Leather
  • Aradigm
  • IBM
  • Lehman Brothers Holdings (Official Creditors Committee)
  • Lockheed Martin
  • Mattel
  • Northrop Grumman
  • Samsung
  • Satyam Computer Services, Ltd.
  • Space Systems/Loral

  Notable Representations

  • Represents the Official Creditors Committee of Lehman Brothers Holdings, Inc. in suits against Citibank, N.A., HSBC, and Credit Suisse, each arising from the early termination of derivative trades.
  • Represented the Official Creditors Committee of Lehman Brothers Holdings, Inc. in a multibillion-dollar lawsuit against JPMorgan Chase & Co. pending in the United States Bankruptcy Court for the Southern District of New York arising from the early termination of 75,000 derivative trades.
  • Represented CIFG Assurance North America in litigation against Bank of America, arising out of fraudulent misrepresentations and breaches of contract in connection with financial guaranty insurance on RMBS.
  • Represented Samsung in federal litigation and ITC proceedings against Apple involving smartphone and tablet computer technology.  Reported decisions include: Apple Inc. v. Samsung Electronics Co., Ltd., 2012 WL 5451411 (N.D. Cal. 2012); -- F.Supp.2d --, 2012 WL 3627731 (N.D. Cal. 2012); 2012 WL 1232267 (N.D. Cal. 2012).
  • In patent suit against telecommunications providers involving prepaid wireless technology, won judgment of $128 million, along with additional award of $35 million in interest and royalties and entry of permanent injunction. Reported decisions include: Freedom Wireless v. Boston Communications Group, Inc., 390 F. Supp. 2d 63 (D. Mass. 2005); 369 F. Supp. 2d 159 (D. Mass. 2005); 369 F. Supp. 2d 155 (D. Mass. 2005); 220 F. Supp. 2d 16 (D. Mass. 2002). The verdict was the largest ever awarded in Massachusetts, and was the eighth biggest verdict awarded in the U.S. that year.
  • Led a patent enforcement action brought by Northrop Grumman against seven corporate defendants that resulted in licenses amounting to a total of 9 figures.  Reported decisions include: The Board of Trustees of the Leland Stanford Junior University et al. v. Tyco International Ltd. et al., 253 F.R.D. 528 (C.D. Cal. 2008); 253 F.R.D. 524 (C.D. Cal. 2008).
  • Responsible for decertification of a class and dismissal of class action against Mattel in class action capitol Madison County, Illinois.
  • Obtained a favorable trial verdict in Delaware Chancery Court for Nuance Communications in a licensing dispute with a technology vendor.
  • Defeated, after bench trial, omitted inventorship claim in suit involving prepaid wireless telephone technology.  Reported decisions include:  Frugoli (Verizon) v. Fougnies, 74 U.S.P.Q.2d 1716 (D. Ariz. 2004).
  • Obtained summary judgment for Aradigm Corporation on claims for trade secret misappropriation, conversion, estoppel, breach of contract and breach of fiduciary duty in trade secret misappropriation/patent joint inventorship action.


  • Stanford Law School and Stanford Graduate School of Business
    (J.D., M.B.A., 1997)
    • Fellow, Stanford Center on Conflict and Negotiation, 1997
    • President, JD/MBA Association, 1996-1997

  • The George Washington University
    (M.A., Russian and East European Studies, 1991)

  • Plekhanov Institute of Economics, Moscow, USSR
    (Diploma, 1988)

  • Indiana University
    (B.A., Russian Languages and Literatures; Certificate, Russian and East European Institute, 1987)


The State Bar of California; California Supreme Court; United States Court of Appeals: Ninth Circuit; United States District Courts: Northern District of California, Eastern District of California, Central District of California, Southern District of California


  • Russian

  Prior Associations

  • Cooley Godward LLP:
    • Associate, 1997-1999

  • Research Assistant to Professor Constance Bagley, J.D.:
    • Stanford Graduate School of Business, 1995
      • (work on her book, The Entrepreneur's Guide to Business Law, West Publishing, 1998)


  • Southern California Super Lawyer, 2012 - 2016
  • Named one of Benchmark Plaintiff Top 150 Women in Litigation, 2014
  • Benchmark Plaintiff Local Litigation Star for California, 2013, 2014
  • Named as Stanford Associate for outstanding volunteer service, 2013

Publications and Lectures

Professional Activities

  • Counsel to the Rose Bowl Legacy Foundation, 2015-present
  • Member, Association of Business Trial Lawyers, 2014-present
  • Member, Los Angeles Intellectual Property Law Association, 2011-present
    • LAIPLA Ambassador, 2014, 2015
    • Committee Chairman, 2011
  • Member, Board of Visitors, Stanford Law School, 2006-2011
  • Member, Board of Directors, Foundation of the State Bar of California, 2006-2009
  • Co-Chairman, Stanford Law Society of Los Angeles, 2006-2008
  • Co-Chairman, Stanford Law Society of Silicon Valley, 2000-2001
  • Member, Los Angeles Bar Association