People / Andrew P. Van Osselaer
Van Osselaer Andrew

Andrew P. Van Osselaer

Andrew Van Osselaer is a litigator focusing on the resolution of complex commercial disputes and regulatory investigations arising from clients’ commercial and industrial operations. Whether advising a client in the aftermath of an environmental disaster, defending a client against a design-defect claim, or helping a client recover against a recalcitrant insurer, Andrew tailors practical solutions that help clients overcome immediate obstacles and plan for future contingencies.

Andrew represents clients in industry sectors that rely heavily on technical expertise and engineering judgment. These include various forms of product manufacturing; chemical manufacturing; industrial waste management; and industrial, infrastructural, and commercial design and construction. Because these clients’ disputes often are as complex and diverse as their operations, Andrew’s success has been in no small part due to his practiced skill in communicating complex and scientific concepts and his commitment to mastering the art of litigation in whatever battleground clients find themselves—whether before a court, a regulatory agency, or an international arbitration tribunal.

Andrew graduated from the University of Texas School of Law with High Honors and served as the Managing Editor of the Texas Law Review. Prior to law school, Andrew worked on the technical side of Austin’s live music industry, specializing in lighting design and sound engineering. He was recognized in Austin’s Top Attorneys 2021 as a “Rising Star”, Austin Monthly, Open Sky Media.

Show More
Expand All
Publications and Speaking Engagements
  • "Lessons from the Ever Given for an Increasingly Turbulent Global Supply Chain," co-author, Global Trade, April 12, 2021.
  • "Superfund Ruling May Increase Landowners' Cleanup Liability," co-author, Law360, May 21, 2020.
  • "Who Will Pay for the Freeze and Subsequent Meltdown in Texas?" co-author, Insurance Journal, March 16, 2021.
  • "Renewable Energy Cos. Need New Risk Management Tools," co-author, Law360, March 3, 2021.
  • “Texas Environmental Law,” co-author, Volumes 45-46, Chapter 12 Storage Tanks, Chapter 34 Insurance, Thomson Reuters, 2020-2021.
  • “Insurance Coverage for Businesses’ COVID-19-Related Losses,” co-presenter, Austin Bar Association Remote CLE, April 15, 2020.
  • “Texas Environmental Law,” co-author, Volumes 45-46, Chapter 12 Storage Tanks (UST, AST, and Solid Waste), Thomson Reuters, 2019-2020.
  • “Ethics and the Environmental Lawyer,” panelist, Texas Environmental Superconference’s Walking a Tightrope, July 31, 2019.
  • “Clean Water Act in 2019: What WOTUS and Maui Mean for Oil and Gas,” presenter, Tarrant County Bar Association Environmental Law Section Luncheon, April 25, 2019.
  • "Data Privacy: What 2019 Holds for U.S. Companies," author, Lexology, 2019.
  • "Texas Rules of Form Companion Report," author, Texas Law Review, 2018.
  • "Texas Rules of Form," reporter, 14th ed., 2018.
  • "Insider Trading Enforcement & Link Prediction," author, 96 TEXAS L. REV. 399, 2017.


J.D., University of Texas School of Law, 2018, with high honors; Chancellor; Order of the Coif; Managing Editor, Texas Law Review

B.A., University of Texas at Austin, 2015, with highest honors



Court Admissions

U.S. Court of Appeals for the Fifth Circuit

U.S. District Court for the Northern District of Texas

U.S. District Court for the Southern District of Texas

U.S. District Court for the Western District of Texas

U.S. District Court for the Eastern District of Texas

Press Release
5 Haynes Boone Lawyers Named Among Top Attorneys in Austin
August 02, 2021

Austin Monthly magazine has included the following Haynes and Boone, LLP lawyers in its 2021 listing of Austin’s Top Attorneys: Partners Leslie Thorne and Adam Sencenbaugh; Senior Counsel Jeff Civins; Counsel Mike Hatchell; and Associate Andrew Van Osselaer. Austin Monthly additionally named Hatchell and Civins as Legacy Award winners. “These attorneys represent the best of the best with more tha [...]