Jim Heffner

Jim Heffner


600 West Broadway
Suite 1500
San Diego, California 92101-3384

Primary Practices

Jim Heffner is a litigation partner in Hahn Loeser’s San Diego office primarily handling high-stakes business disputes, complex commercial litigation, and large exposure employment litigation. He has a unique perspective, representing plaintiffs and defendants in a broad range of disputes.

Jim knows from experience what motivates plaintiffs and defendants. This dual perspective informs his litigation and trial tactics, settlement negotiations, and mediation presentations. Jim’s emphasis on case-specific legal strategy results in efficient and effective tactics often unimagined by the opposition.

Far from a cookie-cutter practice turning out the same case time after time, Jim thrives on variety, flexibility, and creativity. He draws on his passion for the law, deep desire to win, and business acumen to the benefit of his clients, large and small.

Jim’s varied practice has given him substantial experience in litigation involving class-action defense, partnerships and other fiduciary relationships, officer and director liability, contracts, unfair competition, trade secrets, intellectual property, construction and real estate disputes, bad faith insurance claims, and actions for wrongful termination or wage and hour claims, including class action and PAGA.

Jim has a long-standing interest in technology and the cutting-edge intersection of technology, business, and the law. He applies his deep understanding of electronically stored information and communications to gain effective litigation advantages. He has mastered the contours of data preservation and production obligations in a variety of contexts and jurisdictions, giving his clients considerable advantages when seeking hard to obtain evidence.

Professional History

  • Partner, Hahn Loeser & Parks LLP, 2016-present; Associate, 2012-15.
  • Associate, Morris Polich and Purdy, 2009-12.
  • Associate, Reed Smith, 2006-09; Summer Associate 2005.
  • USF Law Clinic, Investor Justice Center, 2005-06.
  • In-House Counsel Internship, Panalpina Group, 2004.


  • University of San Francisco School of Law, J.D., Top 5%, magna cum laude, 2006
    • Honors & Activities: Merit Scholarship Recipient; Law Review Senior Staff, Member; 2nd Place Moot Court National Environmental Negotiations Competition; Moot Court Best Oral Argument; CALI Award for Excellence in Corporations, Property, Criminal Law and Criminal Procedure; Business Law Association, President and Founder; Dean’s Honor Society; Student Senate, Member
  • Arizona State University, W.P. Carey School of Business, Business Management, B.S., 2002
Awards & Distinctions

SD Metro, Men of Accomplishment, 2022


SD Metro, San Diego’s Top Attorneys, 2021


Top 40 Under 40 honoree, San Diego Daily Transcript, 2018


“Top Lawyer,” San Diego Magazine, Complex Commercial Litigation, 2018-present


Rising Star, San Diego Super Lawyers®, 2015-16, 2018


AV Preeminent ®, Martindale-Hubbell


Welsh Inn Presentation Award, 2014-15

Bar Admissions

State of California


U.S. Court of Appeals for the Ninth Circuit; U.S. District Courts for the Central, Eastern, Northern, and Southern Districts of California

Memberships & Affiliations

La Jolla Bar Association, current Board member and past President


San Diego County Bar Association, Member


Association of Business Trial Lawyers, Member


Welsh Inn of Court, former barrister


State Bar of California, Member