Haynes and Boone

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Haynes Boone
HeadquartersHarwood No. 14[1]
Harwood Historic District Dallas, Texas
No. of offices19 (2024)[2]
No. of attorneys625[3]
No. of employees1,275 (approximate)
Major practice areas
  • Corporate/Securities
  • Banking & Finance
  • Energy
  • Real Estate
  • Intellectual Property
  • Labor & Employment
  • Technology
  • Business Litigation
  • Healthcare[4]
Revenue $635,840,000 USD (2025)[5]
Date founded1970 (Dallas, Texas)
FounderRichard Haynes and Mike Boone
Company typeLimited Liability Partnership
Websitewww.haynesboone.com

Haynes Boone is an international corporate law firm headquartered in the Harwood Historic District of Dallas, Texas. It is among the largest law firms based in the United States and provides services for more than 40 major legal practices. The firm has offices in Austin, Houston, New York City, San Francisco, Charlotte, Denver, Chicago, Washington, D.C., Shanghai, London, and Mexico City.

History

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Haynes Boone was founded in 1970 by partners Michael Boone and Richard Haynes, who had been his professor at Southern Methodist University. The firm offers full legal services across multiple sectors, including energy, financial services, private equity and technology.

The firm was a trailblazer for hiring and promoting women attorneys before its peers. Nina Cortell joined the firm straight out of law school in 1976 and was the firm's 13th attorney. She founded the first diversity committee of Haynes Boone.

Haynes and Boone began handling initial public offerings (IPOs) in Dallas during the 1980s economic boom. To promote the firm and grow business outside of Dallas, the firm sponsored a series on local public television in 1984: A Walk Through the 20th Century, hosted by Bill Moyers.

That same year, the firm opened a second office in Fort Worth, followed by a third office in Austin two years later. Its San Antonio office opened in 1987, growing the firm to 166 lawyers. Haynes Boone expanded to Houston in 1990 to solidify its position as a Texas firm rather than just a Dallas firm.

The North American Free Trade Agreement spurred the firm's next expansion. In 1994, it opened its first two offices outside of Texas: a cross-border branch in Mexico City and an out of state branch in Washington, D.C. At that time, the firm had established seven offices and had over 300 lawyers, 30 of whom were international lawyers. The firm continued to grow coast to coast and internationally by adding offices in New York City in 2004, Orange County and Palo Alto in 2009, Shanghai in 2013, Chicago and Denver in 2015, London in 2016, the Woodlands in 2018, Charlotte in 2019, San Francisco in 2020 and Northern Virginia in 2023.

In 2024, Michael Boone was inducted into the Texas Business Hall of Fame.[2]

Notable clients/cases

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Haynes Boone represents many large corporations, including Bank of America, Exxon, and AT&T.[6]. The firm has advised on investments for the Bass, Hunt, and Perot families, as well as for Caroline Hunt, sister of Nelson and Bunker Hunt and an heiress of H.L. Hunt.

In 1993, the firm won a $420 million for Exxon in an insurance coverage case against Lloyd's of London over the Exxon Valdez tanker spill in Alaska.[7][8]

In 1997, it negotiated a settlement for the Catholic Dioceses of Dallas involving sexual molestation charges and its priests.[9][10]

In 1997, oversaw negotiations for a client over a large liquid natural gas facility in mainland China.[citation needed]

In 1999, it oversaw the merger between Exxon Corp and Mobile Oil Corp.[11]

In 2001, Haynes and Boone led a constitutional challenge to Texas’ school finance system in West Orange-Cove C.I.S.D. v. Neeley which ultimately persuaded the Texas Supreme Court to strike down the state's school finance system.[12]

In 2011, it negotiated AT&T Corp's agreement to buy the cell carrier T-Mobile USA.[13]

In 2016, the firm defended Abbot Laboratories in a whistleblower case.[14]

In 2017, it obtained a reversal of a $663 million verdict in federal court for an employee who claimed his company had hidden the fact its highway guardrails did not meet federal standards.[15]

In the summer of 2018, amid an immigration crackdown on the South Texas border, the firm represented many immigrant families pro bono.[16][17]

In 2019 and 2020, the frim oversaw cases that upheld pension rule changes designed to preserve the liquidity of the Dallas Police and Fire Pension system.[18][19][20]

In 2023, Haynes and Boone represented a coalition of news organizations seeking a release of records from the 2022 mass shooting in the City of Uvalde.[21][22][23][24]

Community involvement and pro bono work

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Richard Haynes received the Justinian Award for Public Service in 1989 in recognition of his ongoing service to the Dallas community. Co-founder, Mike Boone, was awarded the Robert S. Folsom Leadership Award for public service in 2012 and in 2019, the Highland Park Independent School District in Dallas named an elementary school after him, recognizing his continued support and contributions to public service for the Dallas public school. The school is now called Michael M. Boone Elementary School.[25]

References

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  1. ^ Brown, Steve "Law firm Haynes and Boone is growing space in new office tower north of downtown Dallas" Dallas News, January 26, 2023. Retrieved November 5, 2025.
  2. ^ a b "Mike Boone – Texas Business Hall of Fame".
  3. ^ "Haynes and Boone" Law.com. Retrieved October 24, 2025.
  4. ^ "Home". haynesboone.com.
  5. ^ "[1]"
  6. ^ "Client win - ATT". www.haynesboone.com. Retrieved 2025-05-16.
  7. ^ Jones, Kathryn (1993-10-10). "A Collision in Court on Exxon's Oil Spill". The New York Times. ISSN 0362-4331. Retrieved 2025-05-16.
  8. ^ Paltrow, Scot J. (1993-09-01). "Insurers Sue Exxon to Avoid Paying Costs of Valdez Spill". Los Angeles Times. Retrieved 2025-05-16.
  9. ^ Allison, By Wick (2010-06-23). "From 2010: Why the Catholic Diocese of Dallas Burned While Prelates in Rome Fiddled". D Magazine. Retrieved 2025-05-16.
  10. ^ "George Bramblett RIP". www.haynesboone.com. Retrieved 2025-05-16.
  11. ^ "Exxon-Mobil Merger Creates the World's Second-Largest Company | EBSCO Research Starters". www.ebsco.com. Retrieved 2025-05-16.
  12. ^ "NEELEY v. WEST ORANGE COVE CONSOLIDATED INDEPENDENT SCHOOL DISTRICT (2007)". Findlaw. Retrieved 2025-05-16.
  13. ^ "Legal Ace in AT&T's Purchase, Sale of Time Warner Got Big Paycheck". Corporate Counsel. Retrieved 2024-10-31.
  14. ^ "Abbott Whistleblower Seeks New Trial In $219M Stent Row - Law360". www.law360.com. Retrieved 2024-11-02.
  15. ^ "Most Closely Watched Cases in Texas in 2017". www.haynesboone.com. Retrieved 2025-05-16.
  16. ^ "Media Coverage for Asylum Due Process Fight". www.haynesboone.com. Retrieved 2025-05-16.
  17. ^ "Campos in TribTalk on Border Crisis". www.haynesboone.com. Retrieved 2025-05-16.
  18. ^ "Media Covers Win for Texas First Responder Pension Fund". www.haynesboone.com. Retrieved 2025-05-16.
  19. ^ "Haynes and Boone Represents Dallas Police and Fire Pension System Board". www.haynesboone.com. Retrieved 2025-05-16.
  20. ^ "Texas Supreme Court Grants Review of Five Cases Handled by Haynes and Boone". www.haynesboone.com. Retrieved 2025-05-16.
  21. ^ "Haynes Boone Fights for Transparency in Uvalde". www.haynesboone.com. Retrieved 2025-05-16.
  22. ^ "HB Texas Legislature". www.haynesboone.com. Retrieved 2025-05-16.
  23. ^ "Haynes Boone Secures New Win for Open Records Access in Uvalde School Shooting Case". www.haynesboone.com. Retrieved 2025-05-16.
  24. ^ "Haynes Boone Argues for Uvalde Transparency as New Texas Appeals Court Holds First Hearings". www.haynesboone.com. Retrieved 2025-05-16.
  25. ^ "Michael M. Boone Elementary School". boone.hpisd.org. Retrieved 2024-10-31.
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