About Chase Tajima

Chase Tajima is the managing partner of Tajima LLP, a California-based law firm focused on business litigation and complex commercial disputes. He represents business owners, executives, and companies in high-stakes matters involving partnership disputes, corporate control, trade secrets, and financial claims.

Mr. Tajima has successfully guided clients through all phases of litigation, from pre-suit strategy through trial, arbitration, and appeal. His experience includes securing dispositive wins, obtaining injunctive relief in urgent business disputes, and achieving significant settlements and arbitration awards in complex commercial matters.

His representative results include dismissing claims against a company CEO in a corporate control dispute, obtaining substantial arbitration awards, and resolving high-exposure litigation through strategic counterclaims and negotiation. He has also achieved a U.S. Tax Court trial victory involving multimillion-dollar IRS assessments.

Before founding the firm (formerly Trépanier Tajima LLP), Mr. Tajima practiced in Los Angeles and Honolulu, where he handled complex litigation, real estate transactions, and tax-related matters. He co-authored the Limited Liability Company Manual for the Hawaii State Bar Association and served as a vice chair of its tax section.

Mr. Tajima earned his J.D. from Loyola Law School with First Honors and his LL.M. in Taxation from Georgetown University Law Center with distinction. He began his career in international business consulting and previously served as a Capitol Hill intern.

 

Awards

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Civil Litigation
Posted by Angie
November 21, 2025
Hired Attorney

Facing Bankruptcy, wrongfully terminated by a state agency after 28 years based on false claims which then evolved into a civil suit against me! I felt hopeless—My former attorney ruthlessly abandoned me and no one else would touch my bleak situation until I found Chase! He responded immediately, acted quickly with compassion and a commitment to justice. Chase and his team overturned an appeal dismissal and provided me with WINS resulting in indemnification, closure to the civil lawsuit & recovery of attorney fees from the state. Chase, Ms. Dale and the whole team have been attentive throughout this stressful time, answering questions without hesitation at all hours and even on weekends. Their dedication to fighting for the truth and their ability to take on challenges others were intimated by is truly remarkable. If you are looking for a law firm that genuinely cares, with integrity and delivers results, I recommend Chase Tajima and his team. He turned my despair into confidence.

 
Real Estate
Posted by anonymous
November 06, 2025
Hired Attorney

I went to Chase for a consultation regarding issues with my previous Real Estate agent. He offered me great advice on how to approach the situation professionally. Thankfully, his advice allowed us to move forward without legal processing. Thank you, Chase!

Civil Litigation
Posted by Sandy
May 13, 2025
Hired Attorney

I wholeheartedly recommend Chase and his firm. What truly stood out to me was the attentiveness and warmth of his entire team, they were not only professional but genuinely kind and supportive throughout the process. My case was built on a web of complete false claims, and navigating it was emotionally overwhelming. Chase was more than just my legal representative; he provided unwavering emotional support and guided me through every step with a reassuring, hands-on approach. In what was an incredibly daunting time, he made me feel safe, informed, and empowered. What impressed me most was his integrity. Rather than prolonging the case for the sake of billable hours, he proposed a bold and strategic approach designed with my long-term well-being in mind. His plan was both aggressive and innovative, ultimately leading to the dismissal of the case. Chase is truly exceptional, like a ninja in the courtroom: one swift, precise move, and the opposition didn’t stand a chance.

 

Services

Areas of Law

  • Eminent Domain
  • Products Liability
  • Other 9
    • Civil Trials and Appeals
    • Real Estate Litigation
    • Inverse Condemnation
    • Partnership and Corporate Disputes
    • Cannabis
    • Subsea Cables and Data Centers
    • Religious Organizations
    • Tax Controversy
    • Contracts and Commercial Disputes

Practice Details

  • Payment Information
    Accepted Credit Cards
    American Express
    MasterCard
    Other
    Visa
  • Firm Information
    Position
    Partner
    Firm Name
    Tajima LLP (formerly Trepanier Tajima LLP)
    Firm Onwership
    Minority Owned
  • Additional Links

Experience

  • Bar Admission & Memberships
    Admissions
    2010, Hawaii
    2011, District of Columbia
    2015, California
    U.S. Court of Appeals 9th Circuit
    U.S. Court of Appeals Federal Circuit
    U.S. District Court Central District of California
    U.S. District Court District of Hawaii
    U.S. Tax Court
  • Education & Certifications
    Law School
    Georgetown University Law Center
    Class of 2011
    LL.M.
    Taxation, with distinction

    Loyola Law School
    Class of 2010
    J.D.
    Honors: Dean's Honor List
    Other Education
    University of Southern California, Marshall School of Business
    Class of 2006
    B.S.
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Attorneys FAQs

  • What year was this attorney first admitted to the bar?
    Chase Tajima was admitted in 2010 to the State of Hawaii.
  • Is this attorney admitted to the bar in more than one state?
    Yes, Chase Tajima is admitted to practice in California, District of Columbia and Hawaii.
  • Is this attorney admitted to practice in any U.S. Federal Courts?
    Chase Tajima is admitted to practice before the United States Court of Appeals for the Federal Circuit, United States Court of Appeals for the Ninth Circuit, United States District Court for the Central District of California, United States District Court for the District of Hawaii and United States Tax Court.
  • What law school did this attorney attend?
    Chase Tajima attended Georgetown University Law Center and Loyola Law School.