Atty. Ivan E. Mattei

Atty. Ivan E. Mattei

Ivan E. Mattei is a lawyer practicing project finance, mergers & acquisitions, finance and 5 other areas of law.

New York New York 39 yrs experience 39 year
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Finance & More Attorney · Serving New York, NY · 39+ Years Experience

Profile Summary

About Ivan E. Mattei at a Glance

Ivan E. Mattei is a Partner based in New York, New York, practicing at Debevoise & Plimpton LLP. They have 39+ years of legal experience, licensed to practice since 1987. Their practice focuses on business, m&a, and insurance. Admitted to practice in New York (1987). Educated at Harvard Law School (J.D., 1985) and Georgetown University (B.S. Harvard, 1979). Serves clients in New York, NY and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About Ivan E. Mattei

  • Ivan E. Mattei is a lawyer practicing project finance, mergers & acquisitions, finance and 5 other areas of law
  • Ivan received a B.S. degree from Georgetown University in 1979, and has been licensed for 39 years
  • Ivan practices at Debevoise & Plimpton LLP in New York, NY

Practice Areas Explained

Ivan E. Mattei's Areas of Legal Practice

Each practice area below reflects the types of cases Ivan E. Mattei handles, with a practical overview of what that area of law involves and how it may apply to your situation in New York.

Business & Corporate Law in New York

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Ivan E. Mattei is one of 497,491 business attorneys indexed nationally. Browse business attorneys in New York →

Mergers & Acquisitions in New York

Ivan E. Mattei is one of 49,430 m&a attorneys indexed nationally. Browse m&a attorneys in New York →

Insurance Law in New York

Insurance attorneys for coverage disputes, bad faith claims, denied claims, and policy disputes.

Ivan E. Mattei is one of 120,903 insurance attorneys indexed nationally. Browse insurance attorneys in New York →

Jurisdictional Context

Why Local Counsel Matters in New York

Practicing law in New York. Legal matters in New York are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in New York are typically filed in the local municipal court or the appropriate New York state district court, depending on subject matter and amount in controversy. An attorney licensed in New York brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in New York courts without local counsel or pro hac vice admission.

New York Courts and Legal Process

Choosing a New York-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.

Looking for additional New York attorneys? Browse all attorneys in New York or all attorneys in New York.

Frequently Asked

Common Questions About Ivan E. Mattei

Where is Ivan E. Mattei's law office located?
Ivan E. Mattei's law practice is located in New York, New York. The firm is Debevoise & Plimpton LLP. You can contact the office directly through this profile page.
What practice areas does Ivan E. Mattei handle?
Ivan E. Mattei focuses on business, m&a, insurance. Each practice area listed reflects experience handling cases of that type in New York.
How long has Ivan E. Mattei practiced law?
Ivan E. Mattei has 39+ years of legal experience and has been licensed since 1987.
Where did Ivan E. Mattei go to law school?
Ivan E. Mattei earned their education at (J.D., 1985); (B.S. Harvard, 1979).
How can I contact Ivan E. Mattei for a consultation?
You can contact Ivan E. Mattei directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Professional Profile

Why Clients in New York Choose Ivan E. Mattei

Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Ivan E. Mattei's practice in the field of business, m&a, and insurance.

Decade-Tested Legal Experience

Ivan E. Mattei brings 39+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Broad Practice Area Coverage

Covering business, m&a, and insurance, Ivan E. Mattei can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in New York

A New York-based practice means Ivan E. Mattei attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.

Case Types

Common Legal Issues Ivan E. Mattei Handles in New York

Below is a representative sample of the types of matters Ivan E. Mattei has experience with under New York law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.

Business formation and structure
Business
Contract drafting and review
Business
Partnership disputes
Business
Merger and acquisition support
Business

This list is illustrative, not exhaustive. Contact Ivan E. Mattei directly to discuss the specifics of your situation.

Search Reference

How People Find Ivan E. Mattei Online

Prospective clients searching for legal help in New York commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like Ivan E. Mattei.

Ivan E. Mattei attorney Ivan E. Mattei lawyer Ivan E. Mattei New York Ivan E. Mattei reviews Ivan E. Mattei contact Debevoise & Plimpton LLP law firm business attorney in New York business lawyer New York best business attorney New York top rated business lawyer near me business attorney New York find a lawyer near me how to hire an attorney

If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with Ivan E. Mattei directly.

Education & Law School Background

J.D.
Harvard Law School
- 1985
B.S. Harvard
Georgetown University
- 1979

Bar Admissions & Licensed Jurisdictions

New York
Admitted: 1987

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