Photo of Patrick B. McMillin

Patrick B. McMillin Associate

Areas of Practice


Bar Admissions

  • Texas, 2013


  • The University of Texas School of Law, J.D., 2013
  • The University of Texas at Austin, B.A., Plan II and Government; B.B.A., International Business, 2008

Patrick McMillin’s practice focuses on upstream energy transactions, including mergers and acquisitions. He primarily advises public and private energy companies on the acquisition, development, and operation of mineral assets. He also assists members of the firm’s Corporate and Regulated Industries departments with mergers, acquisitions, and joint ventures in a variety of industries.


  • Represented a private-equity backed oil and gas company in the sale of its Barnett Shale assets to a private energy limited partnership for an eight-figure sum.
  • Assisted a privately held E&P company with an operatorship election dispute and related exchange of Eagle Ford acreage.
  • Analyzed approximately 100 mineral lien claims totaling in excess of $17 million in connection with the firm’s representation of a bankrupt oilfield services company. Subsequently negotiated releases with dozens of subcontractors and operators.
  • Counseled clients in connection with the purchase of mineral interests in over 20,000 acres.
  • Has examined mineral and leasehold title to thousands of acres throughout Texas.
  • Supported the firm’s litigation department in a $15 million dispute between a lignite operator and a midstream company.
  • Advised clients involved in a variety mineral and leasehold title disputes, including a multi-party dispute regarding oil in gas royalties in an abandoned World War I era subdivision.
  • Assisted a major oil company with real estate due diligence on a network of service stations.
  • Has broad experience working with mineral and surface owners in South and West Texas, including drafting and negotiating oil and gas leases, pooling agreements, farmouts, production sharing agreements, telecommunications/radio tower agreements, water use agreements, pipeline easements, and other documents related to surface use.

Community/Civic Activities

  • San Antonio Association of Professional Landmen
  • Teach For America – Rio Grande Valley, 2008 Corps Member

Texas Review of Law & Politics, Articles Editor