David Patton is a partner in Locke Lord’s Houston office and co-chair of the firm’s Energy Practice Group. He joined Liddell Sapp Zivley and Brown in 1977 as the 26th lawyer in the firm. Patton has over 40 years of experience in various legal aspects of the oil and gas industry. He is a frequent speaker on oil and gas issues and is active in the Rocky Mountain Mineral Law Foundation and the State Bar of Texas.

What is the biggest change you have seen in the profession during your career?