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Your Corporate Counsel for Growth

Trusted Legal Advisors in Mergers, Acquisitions, Technology, and Emerging Businesses Serving Houston, Dallas, and Beyond
About Us
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Vanguard Legal is a Texas-based corporate law firm focused on helping businesses grow, innovate, and succeed.

Houston, Dallas, and Beyond
MERGERS & ACQUISITIONS
We help companies structure, negotiate, and close transactions efficiently while safeguarding their commercial and legal interests. From small strategic acquisitions to complex cross-border deals, our team provides the experience and precision needed to get deals done right.
STARTUPS AND EMERGING COMPANIES
Vanguard Legal advises startups and early-stage ventures as they form, scale, and secure funding. We guide founders through entity formation, venture financing, technology commercialization, and strategic partnerships—so you can focus on building your business.
INTERNATIONAL BUSINESS
Our firm represents international companies expanding into Texas and U.S. markets, as well as domestic businesses growing abroad. With attorneys experienced in cross-border operations, we provide practical counsel on regulatory compliance, tax strategy, and international deal structuring for multinational enterprises.

Meet Our Legal Professionals: Our Team is Dedicated to Your Success.

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PARTNER

Aaron Woo

Aaron Woo represents companies from diverse sectors including energy, software and high-tech.

Doug McCullough
PARTNER

Doug McCullough

Doug McCullough is a mergers & acquisitions and international business attorney, with a background in taxation.

Danielle Huddleston
PARTNER

Danielle Huddleston

Danielle Huddleston focuses on commercial and corporate transactions.

LEGAL SERVICESThe Vanguard Legal Comparative Advantage

Our Advantage

Our comparative advantage stems from our nimble, timely service, dedication to professional excellence, a focus on core competencies, and personal commitment to our client’s success.

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Our Clients

We work with clients from nearly every industry ranging from start-up ventures to middle market corporations. We also work with multinational companies expanding into the Texas market and local companies growing globally.




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Our Culture

Vanguard Legal has a truly collegial environment that fosters collaboration, personal growth, and initiative. We value attorney development and pride ourselves on the long term retention of our talented attorneys. Join us!


PUBLICATIONS

October 23, 2025
Tax Planning for Foreign Companies Expanding into Texas
Tax Planning for Foreign Companies Expanding into Texas
Foreign-invested enterprises continue to view Texas as a compelling jurisdiction for expansion. The state’s pro-business legal landscape, deep skilled workforce, and the absence of a personal income tax all contribute to the appeal. That said, foreign companies seeking to establish operations in Texas must navigate a complex matrix of U.S. federal tax rules, state taxes,...
October 18, 2025
Texas M&A Outlook: Why Now May Be a Window of Opportunity for Entrepreneurs
Texas M&A Outlook: Why Now May Be a Window of Opportunity for Entrepreneurs
After a muted start to 2025, the Texas mergers and acquisitions (M&A) market is showing renewed vitality. Improved financing conditions, stronger buyer appetite, and stabilizing valuations are creating opportunities for both strategic acquirers and private equity (PE) investors. Yet global and domestic uncertainties—ranging from tariffs and policy shifts to inflation and rate volatility—underscore the need...
October 4, 2025
Surviving Mercantilism: International Business Considerations
Surviving Mercantilism: International Business Considerations
Since President Donald Trump declared a series of tariffs on “Liberation Day” on April 2, 2025, world markets have been rocked with uncertainty and increased prices for consumers and producers alike. The economic results have been sluggish productivity, job losses, and slowing factory productivity each month since April 2. If there is a silver lining,...