David X. Sullivan
About David X. Sullivan
David X. Sullivan is a lawyer based in Hartford, CT and has been recognized in The Best Lawyers in America® since 2023. David X. Sullivan is recognized in the following practice area:
- Hartford, Connecticut
- Criminal Defense: White-Collar
Current Firm: McCarter & English LLP
Education: Columbus School of Law, Catholic University of America, J.D., graduated 1988
Location: Hartford, CT
It takes just a few minutes to optimize your profile for clients looking to engage and lawyers who are ready to refer.
Activate your profile and highlight why your peers recognized in Best Lawyers today.
Nearby Lawyers
Joseph P. Krevolin is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Joseph P., who practices law in Middletown, Connecticut, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Joseph P. is held by other top lawyers in the same geographic and legal practice area.
Craig Raabe joined the partnership in 2016 from a large, regional law firm, where he previously served as the chair of the litigation department. Mr. Raabe has tried many complex civil and criminal cases. He is a Fellow in the American College of Trial Lawyers. He has been listed in The Best Lawyers in America© since 2006 (Copyright by Woodward/White, Inc., Aiken, SC), most recently in six disciplines: Bet-the-Company Litigation, Commercial Litigation, Antitrust, Regulatory/Environmental...
Patrick A. Klingman is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Litigation - Labor and Employment. Patrick A., who practices law in Hartford, Connecticut, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Patrick A. is held by other top lawyers in the same geographic and legal practice area.
Lawrence J. Kiel is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Lawrence J., who practices law in Farmington, Connecticut, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lawrence J. is held by other top lawyers in the same geographic and legal practice area.
Marc T. Finer is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Marc T., who practices law in West Hartford, Connecticut, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marc T. is held by other top lawyers in the same geographic and legal practice area. Marc T. Finer is a Principal in Cummings & Lockwood's Private Clients Group and is based in the West Hartford Office. Marc b...
Caroline Demirs Calio is a Principal in Cummings & Lockwood's Private Clients Group and is based in the West Hartford office. She practices in the areas of estate and gift tax planning, asset protection, estate settlement and trust administration. In addition, Caroline advises closely-held business owners on succession planning issues and various general corporate matters. She also has experience serving as an Executor and Trustee. Prior to joining Cummings & Lockwood, Caroline worked...
Mr. Jainchill is a certified Civil Trial Advocate by the National Board of Trial Advocacy. He has been listed in the field of Personal Injury Litigation in The Best Lawyers in America, every year since 2002, © Woodward/White, Inc., Aiken, S.C., 2012 and has been designated for inclusion in the publication New England Super Lawyers 2005-2012 Magazine ®. Michael Jainchill was named the Best Lawyers' 2014 Hartford Personal Injury Litigation - Plaintiffs "Lawyer of the Year." In 2005, At...
Maria Alexander is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Mass Tort Litigation / Class Actions - Defendants. Maria, who practices law in Hartford, Connecticut, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Maria is held by other top lawyers in the same geographic and legal practice area.
Jon grew up in West Hartford and attended Flagler College in St. Augustine, Florida on an athletic scholarship. While at Flagler, he was named Captain, Team MVP, and All-Conference for the soccer team in 2000. Jon then attended California Western School of Law in San Diego, California but returned to Connecticut to practice law after graduating. With more than 19 years of experience representing people injured at work and due to the negligence of others, Jon formed the Cantor Injury Law Firm....
Frederic Lee Klein chairs the Energy and Utilities Section of the firm's Regulatory, Energy and Telecommunications Department. Fred has wide-ranging experience in energy and utility matters, including electric and natural gas market restructuring, and transactions in regulated and competitive markets. His practice includes representing regulated and unregulated companies before more than a dozen state and federal regulatory commissions, district and appellate courts, as well as representing c...
Explore and Learn
The Family Law Loophole That Lets Sex Offenders Parent Kids
by Bryan Driscoll
Is the state's surrogacy framework putting children at risk?
Unenforceable HOA Rules: What Homeowners Can Do About Illegal HOA Actions
by Bryan Driscoll
Not every HOA rule is legal. Learn how to recognize and fight unenforceable HOA rules that overstep the law.
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
Can a Green Card Be Revoked?
by Bryan Driscoll
Revocation requires a legal basis, notice and the chance to respond before status can be taken away.
What Is the Difference Between a Will and a Living Trust?
by Bryan Driscoll
A practical guide to wills, living trusts and how to choose the right plan for your estate.
US Tariff Uncertainty Throws Canada Into Legal Purgatory
by Bryan Driscoll
The message is clear: There is no returning to pre-2025 normalcy.
New Texas Family Laws Transform Navigating Divorce, Custody
by Bryan Driscoll
Reforms are sweeping, philosophically distinct and designed to change the way families operate.
The 2026 Best Lawyers Awards in Chile, Colombia and Puerto Rico
by Jamilla Tabbara
The region’s most highly regarded lawyers.