Gus Laggner

Bob Duplantis has dedicated his entire career to the oil and gas industry. Prior to joining the firm in 1982 and establishing its Lafayette office, Bob spent more than a decade serving in-house oil company legal departments, including six years as a lobbyist in Baton Rouge, Louisiana. Bob’s law practice focuses on Louisiana oil and gas regulation and “meat-and-potato” legal issues. He routinely argues contract disputes affecting the oil and gas industry, including lease inte...

Army joined the Firm in March 2011, bringing the knowledge and experience he earned over the course of his successful entrepreneurial career. His practice focuses on creditors’ rights, bankruptcy, and commercial transactional work for corporate, oil, gas and energy clients in Louisiana and Texas. Army is also one of only seven Sub-Chapter V bankruptcy trustees selected by the Department of Justice’s United States Trustee Program to serve in the State of Louisiana. Army is a skille...

Successfully reorganized or liquidated numerous businesses in the health care, construction, real estate, agricultural, marine and retail industries. Represented a large timber and land company in fraudulent conveyance litigation with the litigation trust of a major railroad tie manufacturer regarding the sale of a local plant which was settled favorably. Represented the board of trustees of a local college successfully in litigation surrounding the election of the college president . Represe...

Alex Prochaska is special counsel in the Corporate and Litigation practice groups, where he focuses his practice on environmental law. Alex defends clients in enforcement actions brought by state and federal agencies alleging violations of environmental laws including the Clean Air Act (CAA), Clean Water Act (CWA), Resource Conservation and Recovery Act (RCRA), Coastal Zone Management Act, and their state counterparts. Alex also counsels clients in responding to information requests from gove...

Greg Duplantis’ legal practice centers on oil and gas property title examination with an emphasis on analyzing and rendering complex opinions concerning title that is held by production. He frequently calculates varying royalty interests, overriding royalty interests, and proportionately burdened net revenue interests. Greg routinely renders “stand up” title opinions that require physically searching the indices of courts' conveyance records and executing opinions on site. H...

Selected to the 2016 Louisiana Super Lawyer list in the Environmental Litigation practice area (other years recognized: 2013, 2014, 2015) 2011 Baton Rouge Area Environmental Lawyer of the Year Selected for inclusion in The Best Lawyers in America for Litigation - Environmental since 1995 Practice Concentration & Experience Summary: Since he began practicing in 1979, Mr. McNamara has handled a wide range of civil litigation in venues throughout Louisiana. Concentrating on energy litigation...

A Lafayette native, Jimmy earned his Juris Doctorate from Louisiana State University Law School in 1986. During law school, he authored an article entitled “Native Born Acadians and the Equality Ideal” 46 LA. Law Rev. 1151 (1986). He is admitted to practice in all federal and state courts in Louisiana, the U.S. Court of Appeals for the Fifth Circuit, and the U.S. Supreme Court. He is also admitted to practice in Texas. He is currently Treasurer of the Francophone Section of the Lo...

Andrew Quackenbos is a top attorney recognized by Best Lawyers in the practice area(s) of Admiralty and Maritime Law. Andrew, who practices law in Lafayette, Louisiana, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andrew is held by other top lawyers in the same geographic and legal practice area.

Now in his third decade of practice, Kyle Polozola offers substantial experience advising participants in Louisiana’s energy industry. Based in Lafayette, Louisiana, Kyle’s practice at Kean Miller spans litigation, appeals, and transactional matters, with a particular focus on Administrative / Regulatory Law, Energy Law, and Oil and Gas Law. He regularly assists clients with practical, business-oriented legal solutions that are clearly communicated, cost-conscious, and aligned wit...

Sam Masur’s practice is concentrated in the areas of oil and gas litigation, general commercial litigation, oil and gas titles, oil and gas and oil field service company acquisitions and divestitures, and general business acquisitions and divestitures. In both Louisiana state and federal courts, Sam litigates oil and gas and general business contract disputes involving oil and gas leases, overriding royalty interest agreements, joint operating agreements, and distribution agreements and...