On January 1, 1999, Dallas-based Locke Purnell Rain Harrell, founded in 1891, and Houston-based Liddell, Sapp, Zivley, Hill & LaBoon, founded in 1916, combined to form Locke Liddell & Sapp PLLC. The combination results in a firm of over 400 lawyers with offices in Austin, Dallas, Houston, New Orleans and Washington, D.C.

Admiralty/Maritime, Administrative Law, ADR/Mediation/Arbitration, Antitrust, Appellate Law, Banking/Lending and Financial Services, Bankruptcy/Creditor Rights, Corporate/Securities, Energy, Environmental, ERISA/Employee Benefits, Estate Planning/Probate/Trust, Franchise and Distribution, Health Care, Immigration, Insurance, Intellectual Property/High Technology, International, Labor/Employment, Legislative and Regulatory, Litigation, Media/Communications, Oil and Gas, Product Liability/Tort, Professional Liability, Public Finance, Public Utility, Real Estate, Tax, Technology and Commercial Transactions, Telecommunications, Transportation, Unfair Competition.