Diserio Martin O'Connor & Castiglioni LLP - Stamford, CT office in Stamford, Connecticut
Diserio Martin O'Connor & Castiglioni LLP - Stamford, CT

Diserio Martin O'Connor & Castiglioni LLP - Stamford, CT

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1010 Washington Blvd, Suite 800, Stamford, Connecticut, United States
43 Years of Practicing, since 1983
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+1 203-358-0800
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Diserio Martin O'Connor and Castiglioni LLP is a premier, full-service commercial and private client law firm based in Stamford, Connecticut. Established in 1983, the firm provides innovative and cost-effective legal counsel across corporate finance, intellectual property, litigation, employment law, commercial real estate, and estate planning.

Comprehensive Legal Solutions for Over Forty Years

In the highly competitive sectors of modern business, corporate transactions, and private wealth management, securing elite legal counsel is critical to safeguarding your future. Diserio Martin O'Connor and Castiglioni LLP, centrally located at 1010 Washington Boulevard in Stamford, Connecticut, has been solving the most challenging issues for a highly diverse roster of clients since its founding in 1983. Established byEugene Diserio, Richard Martin, Brian O'Connor, and Richard Castiglioni, the firm has built a legacy of trust, exceptional advocacy, and commercial acumen. Whether you represent a multigenerational family office, a fast-growing tech startup, or a major corporation, having a full-service team by your side is essential. If you want to find an attorney who combines deep local experience with global reach, Diserio Martin offers the sophisticated legal representation necessary to navigate complex regulatory environments and protect your assets.

Corporate Finance, Emerging Companies, and Transactional Law

A business's long-term success relies heavily on its structural and transactional health. The corporate and finance division at Diserio Martin provides comprehensive guidance on business formation, contract drafting, securities, debt financing, and complex mergers and acquisitions. They represent emerging growth companies, startups, and established enterprises across various industries. From structuring initial investment rounds to executing buy-sell agreements and corporate restructurings, their practical, business-minded approach ensures your commercial interests are shielded from potential litigation. If you urgently need a lawyer to negotiate commercial lease agreements or oversee a high-stakes transaction, their corporate attorneys act as dependable partners to help your enterprise grow safely and efficiently.

Strategic Estate Planning, Wills, and Trust Administration

Preserving your hard-earned wealth and organizing the smooth transfer of assets requires proactive and meticulous planning. Diserio Martin's private clients group specializes in advanced estate planning, trusts, and estates, wealth transfer, and probate litigation. They work closely with individuals, professionals, and family offices to construct tailored estate structures, establish protective trusts, and coordinate multigenerational succession plans. By aligning their estate planning with business succession and tax planning strategies, they minimize state and federal tax liabilities. When looking to hire an estate planning attorney in Stamford to protect your legacy, their experienced trust and estate administration lawyers deliver the analytical precision and compassionate guidance required during transitions.

High-Stakes Commercial Litigation and Intellectual Property

Commercial disputes and intellectual property protection require a trial-ready legal team with a proven record of courtroom success. Diserio Martin represents plaintiffs and defendants in business disputes, commercial litigation, employment litigation, construction defects, and professional liability. Additionally, their intellectual property group manages patent enforcement, trademark protection, copyrights, and worldwide brand development. They practice extensively in federal and state appellate and trial courts, as well as in alternative dispute resolution forums. If you need to find a Stamford lawyer with the resources to pursue complex litigations and protect your proprietary branding, their trial lawyers deliver aggressive and thorough courtroom advocacy.

Residential and Commercial Real Estate Transactions

Real estate transactions, whether residential purchases or commercial developments, represent significant investments that require strict oversight. Diserio Martin represents buyers, sellers, landlords, and developers in commercial real estate and residential real estate matters. They manage mortgage closings, refine lease agreements, and navigate environmental, zoning, and land use approvals. By coordinating property deals with tax and corporate structures, they ensure every closing is executed with minimal exposure to risk.

Award-Winning Advocates Dedicated to client Success

The attorneys at Diserio Martin are consistently recognized by their peers for their professional achievements, earning accolades such as Connecticut Super Lawyers, Rising Stars, and AV Preeminent ratings from Martindale-Hubbell. They are also active members of the Legal Netlink Alliance, a global network of independent law firms, extending their reach worldwide. Contact Diserio Martin O'Connor and Castiglioni LLP today to schedule your consultation and secure elite, multi-generational legal support.


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Location & Access

Primary Address

Located in the heart of the Stamford Central Business District, with scenic views of the nearby Mill River Park.

Building Location

This 11-story Class A commercial office building, known as Washington Square, is situated at the corner of Washington Boulevard and West Park Place, across from Mill River Park.

Parking Details

A secure multi-storey parking garage is available directly on-site for tenants and clients, with additional public parking at the nearby Bell Street Garage where daily parking fees apply.

Public Transit

Served by CTTransit Stamford Route 311 (Port Chester / Stamford); nearest stop is at Tresser Blvd @ Washington Blvd.

Accessibility / Suite Access

Enter through the building's main lobby, which features a reception desk, and take the elevator to Suite 800 on the 8th floor.

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