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Lauren Courtney
Mastio

Position
Partner
Office
New Orleans

Lauren Mastio is a partner in the Litigation Practice Group and a member of the Jones Walker board of directors. She handles all aspects of complex litigation, with a focus on the energy, terminal, and construction industries. She is the co-chair of the Energy, Environmental & Natural Resources Industry Team’s midstream operations and transportation team.


Lauren is an experienced trial attorney, representing clients in commercial disputes and environmental matters. Lauren advises and represents oil and gas industry clients on matters concerning property contamination and restoration; land loss and subsidence; downhole issues; the rights and obligations of parties to joint operating agreements, oil, gas, and mineral leases, surface leases, oil and gas asset purchases, drilling contracts, and pipeline right-of-way agreements; claims under the Outer Continental Shelf Lands Act; and claims under the Louisiana Oil Well Lien Act. Lauren also regularly represents clients in pipeline related matters including pipeline construction issues and expropriation suits. Additionally, Lauren advises clients in connection with terminalling, transportation and storage agreements as well as fabrication agreements. She has represented independent producers, major producers, pipeline companies, significant landowners, fabrication companies, power companies, and product storage and terminalling companies.

Lauren also has an active construction law practice, where she counsels contractors and subcontractors in construction litigation and a range of commercial disputes. She represents clients in cases at the state and federal levels in matters involving design errors, defective specifications, delay in construction claims, change orders, and payment disputes.

Additionally, Lauren represents aviation service providers in a day-to-day advisory capacity, handling a range of matters including compliance matters, the development of policies and procedures, customer contract administration and enforcement, evictions, liens and foreclosures, abandoned aircraft, commercial contracts, and various claims and litigation matters.

Noteworthy

  • Recently served as co-trial counsel on a breach of contract case, defeating cross claims and securing multimillion-dollar jury verdict in client’s favor
  • Recently served as co-trial counsel on multimillion-dollar commercial, cross-border dispute, successfully defending against various claims and securing jury verdict, including significant damages award, in client’s favor
  • Recently negotiated an elaborate consent decree involving hundreds of millions of dollars with the United States involving complex environmental and contractual issues
  • Council for a Better Louisiana Leadership Class (2025)
  • Selected for New Orleans Regional Leadership Institute (2024)
  • The Best Lawyers in America®, Commercial Litigation and Energy Law (2024 and 2025)
  • New Orleans CityBusiness, Leadership in Law Award (2021)
  • Profiles in Diversity Journal, Women Worth Watching Award (2021)

Publications

  • "Increased Demand Is Fueling Interconnection Process Changes," Power Magazine, November 1, 2023
  • "Too Much of a Good Thing? To Manage Demand, Grid Operators Implement New Interconnection Application Procedures," The Energy Transition ERA: Environmental, Renewables & Alternative Energy Client Alert, October 30, 2023
  • "Too Much of a Good Thing? Heavy Wind Power Presence Leads to Interconnection Inefficiencies," North American Wind Power, October 3, 2023

Presentations

  • "Laying The Groundwork For Power-To-X Permitting," Business Network for Offshore Wind's Inaugural Power to X Summit, August 24, 2023

Memberships

Professional Memberships:

  • American Bar Association
  • Federal Bar Association
  • The Federalist Society
  • Jefferson Bar Association
  • Louisiana State Bar Association
  • New Orleans Bar Association

Civic Involvement:

  • GNO, Inc., NextGen Council Member, Incoming Chair (2026)
  • Bureau of Governmental Research, Board of Directors
  • New Orleans Hispanic Heritage Foundation, Board; Past President; Azúcar Ball Committee Past Member; 2014 Azúcar Ball Co-Chair
  • March of Dimes, Louisiana State Market Board, Past Member; New Orleans Market Board, Past President; Signature Chef’s Gala Committee Past Member; 2016 Signature Chef’s Gala Chair
  • Audubon Nature Institute, Zoo-To-Do Sponsorship Committee Past Member
  • Audubon Nature Institute, Scales & Ales Host Committee Past Member
  • Legacy Donor Foundation, Soul Revival Committee Past Member
New Orleans
201 St. Charles Ave
New Orleans, LA 70170-5100
D: 504.582.8518
F: 504.589.8518
Emaillmastio@joneswalker.com

Education

  • Vanderbilt University Law School
    JD, 2010
    President and representative for Law and Business Society, and representative for the Entertainment and Sports Law Society; Mock Trial Competition; VLS Ambassadors; Academic Scholarship Recipient 
  • Vanderbilt University
    BS, Human and Organizational Development and Political Science, summa cum laude, 2006
    Dean's List; Social Chair, Phi Alpha Delta; Gamma Beta Phi; Alpha Lambda Delta; Phi Eta Sigma; National Honor Society

Bar Admissions

  • Louisiana

Court Admissions

  • US Court of Appeals for the Fifth Circuit
  • US Court of Appeals for the Federal Circuit
  • US District Court for the Middle District of Louisiana
  • US District Court for the Eastern District of Louisiana
  • US District Court for the Western District of Louisiana
  • US Court of Federal Claims

Related Practices

  • Aerospace & Aviation
  • Energy & Natural Resources
  • Energy Litigation
  • Energy Regulatory
  • Litigation
  • Maritime Litigation and Dispute Resolution
  • Offshore Energy

Related Industries

  • Construction Industry
  • Energy, Environmental & Natural Resources
  • Maritime Industry
  • Cruise Industry
  • Aerospace & Aviation
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