Hahn Loeser & Parks LLP

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

d. (619) 810-4307





San Diego IV Chair

Jim Heffner


Jim Heffner is a litigation partner based out of Hahn Loeser’s San Diego office. Jim regularly represents companies, officers, directors, and individuals in a variety of matters in San Diego and throughout the country.

To each of his matters, Jim brings creativity, an unsurpassed passion for the law, a business background, and sound judgment that considers legal options in light of his clients’ objectives. Jim's unique background combined with his extensive legal expertise enhances his ability to prepare advanced, rational, inventive, and winning strategies for each case. His emphasis on case-specific legal strategy results in efficient and effective tactics often unanticipated by the opposition.

Jim also 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 understands the contours of data preservation and production obligations in a variety of contexts and jurisdictions, giving his clients considerable advantages. He is knowledgeable of the most recent innovations related to decentralized technology and business models, such as blockchains, cryptocurrencies, smart contracts, ICOs and how the related legal frameworks are developing.

Jim's practice primarily involves class-action defense, the litigation of disputes arising from the movement of employees or confidential/trade secret information between competitors, litigation over breaches of duty, and counseling on the implications of technology and the law.


  • Partner, Hahn Loeser & Parks LLP, 2016-present; Associate, 2012-15.

  • Litigation Associate, Morris Polich and Purdy, 2009-12.

  • Commercial Litigation Associate, Reed Smith, 2006-09; Summer Associate, 2005.

  • USF Law Clinic, Investor Justice Center, 2005-06.

  • In-House Counsel Internship, Panalpina Group, 2004.

Highrise Networks, Inc.

800 S. Figueroa, Suite 925

Los Angeles, CA 90017



(213) 712-9080