The Trusted Law Firm of Northern Nevada
Small Firm Care,
Big Firm Resultss
Over 100 Years of Combined Service to Northern Nevada

An Award-Winning Law Firm

  • American Institute of Trail Lawyers - Litigator Of The Year
  • Nevada Business Legal Elite 2014-2016
  • Nevada Business Legal Elite Best Up and Coming 2015-2016
  • Nevada Business Legal Elite Top Attorneys in Nevada 2013
  • ADC Veritas
  • American Association of Premier DUI Attorneys
  • NAFLA Top 10 Ranking 2016
  • Avvo 10.0 Rating, DUI & DWI, 2016
  • The National Top 100 Trial Lawyers
  • Martindale-Hubbell Preeminent 2020
  • America's Top 100 Attorneys

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What Sets Our Firm Apart?

Reasons to Hire Viloria, Oliphant, Oster & Aman L.L.P.
  • Our Strategy

    We’re true trial lawyers. We prepare every case as if it’s going to trial. This ensures we’re ready for the unexpected.

  • Our Resources

    When your case is bigger than you, you need a firm with the resources to support and guide you through it.

  • Our Availability

    When you call, we answer. It’s that simple. We understand that the key to results is constant communication.

  • Our Experience

    You need an attorney who hasn’t just learned about the law, but someone who practices it day in and day out.

Award-Winning Trial Attorneys

Committed to Providing You with the Care & Attention You Deserve
  • Thomas E. Viloria
  • R. Shawn Oliphant
  • Raymond E. Oster
  • Nathan J. Aman
  • Kelli Anne Viloria
  • James J. Barnes
  • Stephanie K. Funk
  • Emilee N. Hammond
  • Kathleen Cooke Mangan
  • Darby G. Phelps
  • Thomas E. Viloria Thomas E. Viloria

    Managing Partner

    Thomas E. Viloria is a founding partner at Viloria, Oliphant, Oster & Aman, L.L.P., focusing his practice on criminal defense, injury cases, and wrongful death claims.

    Thomas E. Viloria Photo
  • R. Shawn Oliphant R. Shawn Oliphant


    R. Shawn Oliphant is a founding partner of the firm Viloria, Oliphant, Oster & Aman, L.L.P. Mr. Oliphant handles serious personal injury and wrongful death claims, and is the head of the firm’s Civil Litigation group.

    R. Shawn  Oliphant Photo
  • Raymond E. Oster Raymond E. Oster


    A Certified Family Law Specialist, Raymond E. Oster brings invaluable experience and skill to Viloria, Oliphant, Oster & Aman, L.L.P.

    Raymond E. Oster Photo
  • Nathan J. Aman Nathan J. Aman


    Nathan J. Aman is a partner with Viloria, Oliphant, Oster & Aman, L.L.P. and respected commercial litigation attorney in Reno, NV. He handles cases involving business law, corporate matters, construction law, civil and commercial litigation, and more.

    Nathan J. Aman Photo
  • Kelli Anne Viloria Kelli Anne Viloria


    Kelli Anne Viloria, Esq., ventured into the private practice of law after spending nearly 14 years as a criminal prosecutor for the Washoe County District Attorney’s Office. 

    Kelli Anne  Viloria Photo
  • James J. Barnes James J. Barnes


    James J. Barnes is a Reno family lawyer, and focuses his practice on divorce and family law. Mr. Barnes has successfully represented clients in all areas of family law.

    James J. Barnes Photo
  • Stephanie K. Funk Stephanie K. Funk


    Practicing business law, commercial litigation, and construction / development law, Stephanie K. Funk is a key member of the legal team at Viloria, Oliphant, Oster & Aman, LLP.

    Stephanie K. Funk Photo
  • Emilee N. Hammond Emilee N. Hammond

    Associate Attorney

    As an associate attorney at Viloria, Oliphant, Oster & Aman L.L.P., Emilee N. Hammond focuses her practice in the areas of civil and commercial litigation, business law, construction law, probate, and trust and estate litigation.

    Emilee N. Hammond Photo
  • Kathleen Cooke Mangan Kathleen Cooke Mangan

    Associate Attorney

    Kathleen Cooke Mangan is a fourth-generation Nevada attorney. Born and raised in Reno, Kathleen earned her International ...
    Kathleen  Cooke Mangan Photo
  • Darby G. Phelps Darby G. Phelps

    Associate Attorney

    Darby G. Phelps is an associate attorney at Viloria, Oliphant, Oster & Aman L.L.P. practicing primarily in the areas of civil and commercial litigation, business law, construction law, probate, and trust and estate litigation.

    Darby G. Phelps Photo

Client Success Stories

Hear From Our Past Clients
  • “Not only did Shawn keep my families needs and wishes at the forefront. He was so empathetic. He really has a gift for making you feel heard.”

    - Dawn B.
  • “You all are truly the best”

    - Former Client
  • “Without you, we wouldn’t be where we are.”

    - Former Client
  • “We truly appreciate everything your office and staff did to help us”

    - Former Client
  • “I reside in Vancouver British Columbia and on Feb 21, 2022, my sister who lives in Reno, Nevada as a retired State of Nevada employee passed away. I was nominated by my family to oversee the estate of ...”

    - John R.