Atty. Jonathan L. Mate

Atty. Jonathan L. Mate

For over fifty years Jonathan L. Mate has practiced law with a specialty in Wills, Trusts and Estates.

Hackensack Hackensack 56 J. Erfahrung 56 year
Call (551) 361-8012 Book Appointment

Profile Summary

About Jonathan L. Mate at a glance

Jonathan L. Mate is a Counsel based in Hackensack, New Jersey, practicing at Newman, Simpson & Cohen, LLP. They have 56+ years of legal experience, licensed to practice since 1970. Their practice focuses on trusts, probate, estate planning, real estate, and estate tax. Admitted to practice in New York (1970), New Jersey (1972), U.S. District Court, Eastern District of New York (1975), and U.S. District Court, Southern District of New York and U.S. District Court, District of New Jersey (1975). Educated at Brooklyn Law School (J.D. New, 1970) and Boston University (A.B., 1967). Recognitions include AV Preeminent. Serands clients in Hackensack, NJ and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

Über uns

  • For over fifty years Jonathan L. Mate has practiced law with a specialty in Wills, Trusts and Estates
  • He was first admitted to the Bar of the State of New York in 1970, and thereafter he was admitted to the Bars of New Jersey and Florida
  • Before becoming Counsel to Newman, Simpson & Cohen, Jon was a partner in the New York law firm of Hesterberg & Keller, LLP, a firm with a reputation for their expertise in all types of estate matters including estate planning, probate, estate administration, estate litigation, succession planning, and general real estate transactions
  • Mr. Mate graduated from Boston University with a Bachelor of Arts Degree in 1967
  • He attended Brooklyn Law School and received his Juris Doctor degree in 1970 and a Master of Laws degree (LL.M) in Taxation from New York University in 1980
  • Jon is a member of the Real Property, Trust & Estate Law Section of the American Bar Association, the Real Property and Probate Trust Law Section of the Florida Bar and the Bergen County Bar Association (New Jersey)
  • He is also a member of the Greater New Jersey Estate Planning Council
  • Jon has earned an AV® Preeminent™ Peer Review rating from Martindale-Hubbell®
  • Jon’s clients include high net worth individuals for whom he has provided legal services in connection with estate planning, succession planning, probate administration and various estate tax issues in New York, New Jersey, and Florida
  • Jon regularly consults with the firm’s business clients to assist them with their business succession and estate planning needs
  • Jon has served on the Board of Trustees of the YJCC of Bergen County and has acted as counsel to that organization and is a former member of the Endowment Committee
  • He has also been appointed as a Guardian ad Litem by the Surrogate of New York County in several matters and has served as an Executor and Trustee in various estates

Practice Areas Explained

Jonathan L. Mate's Areas of Practice

Each practice area below reflects the types of cases Jonathan L. Mate handles, with a brief overview of what that area of law covers.

Trusts

Jonathan L. Mate is one of 104,172 trusts attorneys indexed nationally. Browse trusts attorneys in New Jersey →

Probate

Jonathan L. Mate is one of 128,014 probate attorneys indexed nationally. Browse probate attorneys in New Jersey →

Estate Planning & Probate

An estate planning attorney prepares wills, trusts, powers of attorney, and healthcare directives to protect your family and pass on your assets.

Jonathan L. Mate is one of 226,537 estate planning attorneys indexed nationally. Browse estate planning attorneys in New Jersey →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

Jonathan L. Mate is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in New Jersey →

Estate & Gift Tax

Jonathan L. Mate is one of 3,765 estate tax attorneys indexed nationally. Browse estate tax attorneys in New Jersey →

Jurisdictional Context

Why local counsel matters in New Jersey

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

Looking for additional New Jersey attorneys? Browse all attorneys in Hackensack or all attorneys in New Jersey.

Frequently Asked

Common questions about Jonathan L. Mate

Where is Jonathan L. Mate's law office located?
Jonathan L. Mate's law practice is located in Hackensack, New Jersey. The firm is Newman, Simpson & Cohen, LLP. You can contact the office directly through this profile page.
What practice areas does Jonathan L. Mate handle?
Jonathan L. Mate focuses on trusts, probate, estate planning, real estate, estate tax. Each practice area listed reflects experience handling cases of that type in New Jersey.
How long has Jonathan L. Mate practiced law?
Jonathan L. Mate has 56+ years of legal experience and has been licensed since 1970.
Where did Jonathan L. Mate go to law school?
Jonathan L. Mate earned their education at (J.D. New, 1970); (A.B., 1967).
How can I contact Jonathan L. Mate for a consultation?
You can contact Jonathan L. Mate 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.
What awards or recognition has Jonathan L. Mate received?
Jonathan L. Mate's notable recognition includes: AV Preeminent.

Education

J.D. New
Brooklyn Law School
- 1970
A.B.
Boston University
- 1967

Awards

AV Preeminent

Bar Admissions

New York
Admitted: 1970
New Jersey
Admitted: 1972
U.S. District Court, Eastern District of New York
Admitted: 1975
U.S. District Court, Southern District of New York and U.S. District Court, District of New Jersey
Admitted: 1975
Florida
Admitted: 1979
U.S. Supreme Court
Admitted: 1991

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