León Cosgrove, LLP

León Cosgrove, LLP is a law firm specializing in complex business litigation pending throughout the United States. There is no costly pyramid structure at León Cosgrove. As a business, we are lean and un-leveraged to deliver better results at less cost.

Our lawyers, most of whom are former federal law clerks, were educated at top schools and trained at the world’s largest and most prestigious firms. They have spent their entire legal careers representing clients in some of the most complex lawsuits filed in the United States.

Our clients are our partners, with whom we will share risk in both plaintiff and defense cases all over the country. It’s the way we win.


Miami, FL

255 Alhambra Circle - Suite 800, Miami, FL 33134

Person of contact: Derek E. León

Dallas, TX

8117 Preston Road - Suite 300, Dallas, TX 75225

Person of contact: John D. Bosco

Practice Areas

  • ADR/Arbitration
  • Banking and Finance
  • Insurance
  • Intellectual Property
  • International Litigation
  • Labor & Employment
  • Litigation/Trials

Firm Bio

About the Firm

We opened our commercial litigation practice in 2013, drawing from the ranks of top-tier trial lawyers who represent large and respected institutions in complex lawsuits throughout the United States. Our lawyers come from big firms – Morgan, Lewis & Bockius, Hunton & Williams, Skadden Arps, DLA Piper, Ropes & Gray, Boies Schiller and others ranked in the Am Law 100 – but are not bound by big firm mentality. Most of us are also former federal law clerks. And all of us have substantial expertise in high-stakes litigation, notably financial services, insurance disputes, class actions, and IP.

Our depth of experience has convinced clients such as JPMorgan Chase Bank, N.A., Apple, Volvo Financial, McDonald’s, Michaels, and other Fortune 500’s to hire us.

Our flourishing firm has grown from 2 to 20 lawyers in its first 5 years. Still a boutique, our business approach is lean and hungry, offering our clients better results at lower cost than our multi-layered competitors.

Areas of expertise


Financial Services

Real Estate

Lender Liability


Intellectual Property

Labor and Employment


Class Actions

Insurance Recovery



Chambers and Partners: “They zealously represent their clients. They are relentless, measured and effective and they act very collegially as a team.”

Scott Cosgrove and Derek León have been recognized individually by Chambers USA as leading individuals in litigation and Andrew Zaron as a leading individual for bankruptcy. The Firm is also ranked by Chambers USA for its outstanding litigation practice, noting our experience in commercial, bankruptcy, and labor and employment litigation.

Founding Partner Scott Cosgrove was ranked in the “Top 100” of the several thousand attorneys selected for Florida Super Lawyers 2016. He also has been ranked in commercial litigation by U.S. News & World Report Best Lawyers since 2015.

Founding Partner Derek León has been recognized by The Florida Bar, Hispanic Business magazine (top “Corporate Influential,”) Florida Trend magazine and the South Florida Business Journal.

Alec Shultz has been recognized by Florida Trend and Florida Super Lawyers, and James Bryan has been listed by Florida Super Lawyers.

U.S. News Best Law Firms has ranked León Cosgrove Tier One in bankruptcy & restructuring litigation in the Miami metropolitan area, and partner Andrew Zaron has been ranked a Best Lawyer for bankruptcy litigation and for bankruptcy and insolvency law.

Significant Clients


JPMorgan Chase Bank, N.A.

CDR Creances, S.A.R.

Volvo Financial Services

McDonald’s Corporation

Michaels Stores



World Fuel Services

Atos Origin

 Contact – Derek León