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Atty. John Charles Ertman

Atty. John Charles Ertman

John Charles Ertman is a lawyer practicing antitrust, antitrust litigation, mergers & acquisitions and 6 other areas of law. John received a A.B. degree from Harvard College, and has been licensed for 33 years.

New York New York 33 yrs experience 33 year
Call (646) 347-6159 Book Appointment

Profile Summary

About John Charles Ertman at a glance

John Charles Ertman is a Partner based in New York, New York, practicing at Ropes & Gray LLP. They have 33+ years of legal experience, licensed to practice since 1993. Their practice focuses on business, m&a, securities, and litigation. Admitted to practice in New York (1993). Educated at Harvard Law School (J.D., 1991) and Harvard College A.B. magna cum laude Harvard College A.B. Phi Beta Kappa (—). Active member of The Association of the Bar of The City of New York American Bar Association. Serands clients in New York, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John Charles Ertman is a lawyer practicing antitrust, antitrust litigation, mergers & acquisitions and 6 other areas of law
  • John received a A.B. degree from Harvard College, and has been licensed for 33 years
  • John practices at Ropes & Gray LLP in New York, NY

Practice Areas Explained

John Charles Ertman's Areas of Practice

Each practice area below reflects the types of cases John Charles Ertman handles, with a brief overview of what that area of law covers.

Business & Corporate Law

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

John Charles Ertman is one of 501,317 business attorneys indexed nationally. Browse business attorneys in New York →

Mergers & Acquisitions

John Charles Ertman is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in New York →

Securities Law

John Charles Ertman is one of 64,529 securities attorneys indexed nationally. Browse securities attorneys in New York →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

John Charles Ertman is one of 454,532 litigation attorneys indexed nationally. Browse litigation 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 andnue, 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.

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

Frequently Asked

Common questions about John Charles Ertman

Where is John Charles Ertman's law office located?
John Charles Ertman's law practice is located in New York, New York. The firm is Ropes & Gray LLP. You can contact the office directly through this profile page.
What practice areas does John Charles Ertman handle?
John Charles Ertman focuses on business, m&a, securities, litigation. Each practice area listed reflects experience handling cases of that type in New York.
How long has John Charles Ertman practiced law?
John Charles Ertman has 33+ years of legal experience and has been licensed since 1993.
Where did John Charles Ertman go to law school?
John Charles Ertman earned their education at (J.D., 1991); (—).
How can I contact John Charles Ertman for a consultation?
You can contact John Charles Ertman 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.

Education

J.D.
Harvard Law School
- 1991
Harvard College A.B. magna cum laude Harvard College A.B. Phi Beta Kappa
- In Progress

Bar Admissions

New York
Admitted: 1993

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