Leslie K. Brier

Leslie K. Brier

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Based in Tulsa, Oklahoma, Brier Law Firm provides legal services in the areas of wills, estates and trusts; property law and guardianships.

Founded by Leslie K. Brier, the Firm prides itself on delivering personalized service in an efficient and effective manner, and holds itself to the following guiding principles:
• We conduct all business with honesty and integrity
• We treat all people with dignity and respect
• We work hard to exceed client expectations
• We treat information obtained from our clients and potential clients as confidential at all times

Leslie K. Brier is a results-oriented professional, with nearly 30 years of experience in business, banking and finance. Together with her law degree, this expertise directly benefits the clients she serves.  Known for her outstanding leadership and communication skills, she connects easily with people from all walks of life.  She is focused on her clients’ needs, committed to achieving the best possible outcome under the law, and compassionate in all of her dealings. 


  • University of Tulsa College of Law, Tulsa, Oklahoma
    • J.D. - 2007
    • Honors: Certificate in Comparative and International Law
  • University of Kansas, Lawrence, Kansas
    • B.S., Bachelor of Science - 1978
    • Major: Occupational Therapy
    • Minor: Psychology

Pro-Bono Activities

  • Legal Aid Project (June 2006 to December 2007)
  • Total Source for Hearing Loss and Access (TSHA), Advisory Board / Board Member
  • The Grief Center Board Member
  • University of Tulsa College of Law Alumni Board
  • The Parent Child Center, Advisory Board
  • Tulsa Public Schools, Different and the Same Anti-prejudice Program, Facilitator
  • Junior League, New York and Tulsa
  • M.D. Anderson Cancer Center, Advance Team Member (2000 to 2004)
  • The Mental Health Association in Tulsa, Board Member (1994 to 1998), Volunteer Award (1996)
  • The Pearl M. and Julia Harmon Foundation Award for Volunteerism (1996)
  • The Association for Women in Communications, Board Member (2003 to 2004)

Representative Clients

  • Hargrove

Past Positions

  • Williams Communications, Senior Technical Analyst, 1998 to 2000
  • Midwest Pancake Houses, Inc., Director, Quality Control, 1991 to 1997


  • English

Fraternities or Sororities

  • Delta Gamma

Professional Associations

  • Tulsa Estate Planning Forum, 2018 to Present
  • Tulsa Tax and Probate Lawyers, 2017 to Present
  • Tulsa College of Law Alumni Association, Board Member, 2018 to Present
  • Signature Symphony , Advisory Board Member, 2019 to Present

Practice Areas

  • Estate Planning including Wills, Trusts, DPOAs and Advance Directives 35%
  • Probate 30%
  • Guardianship 30%
  • Property 5%

Bar Admissions

  • Oklahoma, 2008
  • U.S. District Court Eastern District of Oklahoma
  • U.S. District Court Western District of Oklahoma
  • U.S. District Court Northern District of Oklahoma


  • Jessup International Law Moot Court Regional Competition (Spring 2007), Second Place Memorial (Brief) – Citation 10/10, Extent/Use of Research 20/20, Clarity/Organization 19/20, Articulate Analysis 19/20
  • Jessup International Law Moot Court Competition, University of Tulsa (Fall 2005), Best Oralist/Memorial (Brief)
  • JP Morgan Chase SEC Regulatory Compliance Issues for 2007-2007, Seminar Paper (Spring 2007)
  • Options backdating scandal presentation (Spring 2007)
  • Drafted MD&A Overview section of prospectus for Initial Public Offering (IPO) (Spring 2007)
  • Chase Manhattan Bank (JP Morgan Chase) Team Award for outstanding leadership (1989 and 1990)
  • The Williams Companies’ President’s Award for outstanding leadership (1999)

Representative Cases

  • Briggeman v. Hargrove, 2014 OK CIV APP 13, 2014, OK CIV APP, 110552