Atty. Jonathan L. Mate
For over fifty years Jonathan L. Mate has practiced law with a specialty in Wills, Trusts and Estates.
Estate Tax & More Attorney · Serving Hackensack, NJ · 56+ Years Experience
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. Serves clients in Hackensack, NJ and the surrounding metropolitan area.
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About Jonathan L. Mate
- 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 Legal Practice
Each practice area below reflects the types of cases Jonathan L. Mate handles, with a practical overview of what that area of law involves and how it may apply to your situation in Hackensack.
Trusts in Hackensack
Jonathan L. Mate is one of 103,428 trusts attorneys indexed nationally. Browse trusts attorneys in New Jersey →
Probate in Hackensack
Jonathan L. Mate is one of 127,041 probate attorneys indexed nationally. Browse probate attorneys in New Jersey →
Estate Planning & Probate in Hackensack
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 224,789 estate planning attorneys indexed nationally. Browse estate planning attorneys in New Jersey →
Real Estate Law in Hackensack
Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.
Jonathan L. Mate is one of 313,729 real estate attorneys indexed nationally. Browse real estate attorneys in New Jersey →
Estate & Gift Tax in Hackensack
Jonathan L. Mate is one of 3,731 estate tax attorneys indexed nationally. Browse estate tax attorneys in New Jersey →
Jurisdictional Context
Why Local Counsel Matters in Hackensack
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 venue, 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.
Hackensack Courts and Legal Process
Choosing a Hackensack-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 Jersey attorneys? Browse all attorneys in Hackensack or all attorneys in New Jersey.
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Professional Profile
Why Clients in Hackensack Choose Jonathan L. Mate
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 Jonathan L. Mate's practice in the field of trusts, probate, estate planning, real estate, and estate tax.
Decade-Tested Legal Experience
Jonathan L. Mate brings 56+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in New York, New Jersey, and U.S. District Court, Eastern District of New York, Jonathan L. Mate can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering trusts, probate, and estate planning, Jonathan L. Mate can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Hackensack
A Hackensack-based practice means Jonathan L. Mate 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 Jonathan L. Mate Handles in Hackensack
Below is a representative sample of the types of matters Jonathan L. Mate has experience with under New Jersey law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact Jonathan L. Mate directly to discuss the specifics of your situation.
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How People Find Jonathan L. Mate Online
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Jonathan L. Mate's Practice Areas & Specializations
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