Partners at Andrews Kurth Kenyon and Hunton & Williams have agreed to merge their firms and operate as Hunton Andrews Kurth, a 1,000-lawyer firm with offices in 15 U.S. cities and another five located outside the United States.

Hunton Andrews Kurth, which will officially launch on April 2, will have about 300 lawyers in Texas, divided among offices in Houston, Dallas, Austin and The Woodlands—a planned community about 30 miles north of Houston that is popular with many U.S. corporations—as well as more than 200 lawyers in Richmond, Virginia, and more than 150 lawyers each in New York City and in Washington, D.C.