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Leach & Sullivan, Limited Liability Partnership - Duncan, OK

921 W. Main StreetP.O. Box 160 Duncan, OK 73534- 0160

Free Consultation

Updated: 03/21/2023

Duncan Criminal Law Firm


The Sullivan family has been practicing law in Stephens County and southwest Oklahoma since the 1920's. The firm of Leach & Sullivan was founded in 1954 by William O. Leach, Paul D. Sullivan, and Patrick D. Sullivan. The family tradition continued with Michael P. Sullivan joining the firm in 1972 and Kent P. Sullivan joining the firm in 1981. After William O. Leach passed away in 1990, longtime Duncan resident Jay B. Watkins became a partner, after joining the firm in 1987...

About Leach & Sullivan, Limited Liability Partnership

Practice Areas

  • Criminal Law
  • Family Law
  • Real Estate
  • Business Litigation
  • Business Organizations
  • Banking Law
  • Personal Injury
  • Probate
  • Estate Planning
  • Oil & Gas Law
  • Divorce
  • Environmental Law
  • Child Custody
  • Wills & Trusts
  • Insurance
  • Title Examination Law
  • Guardianships and Conservatorships

Representative Clients

  • Citizens' Bank, Velma, Oklahoma
  • Sooner Trucking & Oil Field Services, Inc.
  • Interstate Petroleum Co.
  • Leffler Construction Co.
  • Jack Oil Co.
  • Stephens County Abstract Co.
  • Butkin Oil Co.
  • Raizen Oil Co.
  • Stephens County Economic Development Authority
  • CMI Strategic Marketing & Promotions, Inc.
  • Duncan Association of Realtors, Inc.
  • Legacy Bank, Duncan Oklahoma
  • Jackson Ranches, Inc.
  • Edward Trusts
  • First American Title Insurance Co.
  • Jackson Trusts
  • Lawyers Title Insurance Corp
  • Southwest Title & Trust Co.
  • Stewart Title & Escrow Services




Office Information


921 W. Main StreetP.O. Box 160 Duncan, OK 73534- 0160


  • 580-255-5587

Offers Free Initial Consultation


Accepts Credit Cards


Video & Photo


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921 W. Main StreetP.O. Box 160 Duncan, OK 73534- 0160

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