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Justin Sung-Sup Kim

Justin Sung-Sup Kim

Practice areas:

Personal Injury, Defective / Dangerous Products, Tax Fraud & Tax Evasion, Business, Trademark Infringement, Copyright Infringement, Contracts & Agreements, Federal Regulation, Federal Crime

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About Me

Justin S. Kim joined the firm, Welebir Tierney & Weck in August of 2012. He is a 2004 graduate of Yale Law School, where he was a senior editor of the Yale Law Journal. Prior to law school, Mr. Kim attended Pacific Union College where he earned a B.S. in Business Administration, a B.S. in History and Government, and a B.A. in Chemistry.  He graduated summa cum laude.


Mr. Kim served as a Law Clerk to the Honorable Virginia A. Phillips, U.S. District Judge, Central District of California, in Riverside, California, from 2004 to 2005.  He represented the United States as a Trial Attorney with the Tax Division of the U.S. Department of Justice, in Washington, D.C. from 2005 to 2009. He is a member of the California Bar and has practiced before 12 Federal Districts, including the District Courts for the Central District, Southern District and Eastern District of California.


Mr. Kim also worked on congressional investigations as Counsel to the U.S. Senate Impeachment Trial Committee and Counsel to the Democratic staff of the U.S. House of Representatives Committee on Oversight and Government Reform.  


His areas of practice are Product Defect Litigation, Tax Litigation, Complex Business Litigation, Business Torts, Trademark and Copyright Litigation, Contract Litigation and Federal Agency Investigation.


Photos and Videos

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Practice Areas

Licensed since 2004

  1. Personal Injury: 34%
    2 years
  2. Defective / Dangerous Products: 33%
    2 years
  3. Tax Fraud & Tax Evasion: 11%
    2 years
  4. Federal Regulation: 4%
    2 years
  5. Other: 18%
  6. More 



Free Consultation (60 minutes)

Payment Types:

Credit Card

Attorney Endorsements

4 total 

  • Michael S. Waddington

    I endorse Justin. He is a highly skilled attorney that is well respected in the legal community.


    Michael Waddington Military Law Attorney
    Relationship: Fellow lawyer in community

  • James Francis Tierney III

    Justin offers clients creative advice for resolving difficult problems. He advocates vigorously for his clients and devotes many hours to helping others with legal problems in the community. You would be very fortunate to have him represent you.I endorse this lawyer.


    James Tierney Personal Injury Attorney
    Relationship: Co-worker

Contact Info

Welebir Tierney & Weck, APLC

2068 Orange Tree Lane
Suite 215
Redlands, CA, 92354




Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.

Avvo Contributions

Legal Answers


Award NameGrantorDate Granted
Highest GPAChemistry and History Departments at Pacific Union CollegeN/A
Full Tuition ScholarshipPacific Union CollegeN/A

Work Experience

TitleCompany NameDuration
AttorneyWelebir Tierney & Weck, APLC2012 - Present
Worked on Congressional Investigations as CounselU.S. Senate Impeachment Trial Committee and Counsel to the Democratic staff of the U.S2009 - 2012
Representative Trial Attorney with the Tax DivisionU.S. Department Of Justice2005 - 2009
Law Clerk to Honorable Virginia A. PhillipsCentral District of California2004 - 2005


Association NamePosition NameDuration
The Yale Journal of International LawEditorN/A
The Yale Law JournalSenior EditorN/A
State Bar of CaliforniaAttorney MemberN/A
San Bernardino County Bar AssociationAttorneyN/A


School NameMajorDegreeGraduated
Yale Law SchoolLawJD - Juris Doctor2004
Pacific Union CollBusiness Administration, History and Government, ChemistryUndergraduate2001