BLACKSTONELegal Group
Law firm
Established 1987 · New York

Justice,Integrity,Excellence.

Blackstone Legal Group is a premier full-service law firm dedicated to delivering strategic, results-driven legal representation across every practice area.

Corporate Law◆Civil Litigation◆Real Estate◆Family Law◆Intellectual Property◆Criminal Defense◆Tax Law◆Estate Planning◆Employment Law◆Securities◆Corporate Law◆Civil Litigation◆Real Estate◆Family Law◆Intellectual Property◆Criminal Defense◆Tax Law◆Estate Planning◆Employment Law◆Securities◆
What We Do

Comprehensive Legal Expertise

Our multidisciplinary team covers every facet of law with the depth, breadth, and sophistication that complex matters demand.

01

Corporate Law

From mergers and acquisitions to corporate governance, we counsel Fortune 500 companies and emerging businesses alike through every stage of their legal lifecycle.

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02

Civil Litigation

Our trial lawyers are seasoned veterans of the courtroom, delivering aggressive, strategic representation in complex commercial and civil disputes.

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03

Real Estate

We navigate the full spectrum of real estate transactions — from high-rise acquisitions to residential closings — with precision and speed.

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04

Family Law

Compassionate yet resolute advocacy for divorce, custody, adoption, and estate matters, protecting what matters most to our clients.

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05

Intellectual Property

Protecting innovations through strategic patent prosecution, trademark registration, and IP litigation across domestic and international markets.

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06

Criminal Defense

Uncompromising defense at every level — from white-collar investigations to federal indictments — with discretion and relentless preparation.

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Our Team

The Counsel You Deserve

Every attorney at Blackstone is hand-selected for both their intellectual rigor and their unwavering commitment to client outcomes.

Jonathan Blackstone

With over 30 years at the vanguard of corporate law, Jonathan has orchestrated landmark mergers and regulatory navigations for some of the world's most prominent companies.

Bar: NY, DC, CA

Corporate Law & M&A

Jonathan Blackstone

Founding Partner

Victoria Harrington

Victoria's record in the courtroom is unmatched — a former federal prosecutor turned fierce civil litigator, she has won over $400M in verdicts and settlements.

Bar: NY, NJ

Civil Litigation

Victoria Harrington

Senior Partner

Marcus O'Sullivan

Marcus leads our IP practice with a dual background in electrical engineering and law, securing landmark patents and navigating high-stakes IP litigation globally.

Bar: NY, USPTO

Intellectual Property

Marcus O'Sullivan

Partner

Elena Vasquez

Elena structures billion-dollar real estate transactions and complex financings with remarkable precision, representing developers, REITs, and lenders across New York.

Bar: NY, FL

Real Estate & Finance

Elena Vasquez

Partner

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Case Studies

Victories That Define Us

A $2.8B Cross-Border Merger
Deal Closed in 90 Days
M&AAntitrustInternational

A $2.8B Cross-Border Merger

Blackstone navigated complex antitrust scrutiny across three jurisdictions to shepherd a landmark pharmaceutical merger to completion — 40% faster than industry average.

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TRUST
Client Voices
"
Blackstone didn't just win our case — they dismantled the opposition's entire theory in under a week. The level of preparation and intellectual rigor was extraordinary.
Richard Alderton

Richard Alderton

CEO, Alderton Capital Group

CONSULT
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Schedule Your Free Consultation

Your first consultation is completely confidential and at no cost. One of our senior attorneys will personally review your matter and advise you on the best path forward.

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