Atty. William Oconnor Harnisch

Atty. William Oconnor Harnisch

William Oconnor Harnisch is a lawyer practicing taxation law, corporate law, international law and 1 other area of law. William received a B.B.A. degree from University of Notre Dame in 1962, and has been licensed for 60 years.

White Plains White Plains 60 yrs experience 60 year
Call (914) 829-3584 Book Appointment

Profile Summary

About William Oconnor Harnisch at a glance

William Oconnor Harnisch is an Attorney based in White Plains, New York, practicing at Pullman & Comley, LLC. They have 60+ years of legal experience, licensed to practice since 1966. Their practice focuses on business, tax, m&a, and international. Admitted to practice in District of Columbia (1966), New York (1967), U.S. Supreme Court (1968), and U.S. Tax Court (1970). Educated at Georgetown University (LL.B. New, 1965) and University of Notre Dame (B.B.A., 1962). Recognitions include AV Preeminent. Serands clients in White Plains, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Oconnor Harnisch is a lawyer practicing taxation law, corporate law, international law and 1 other area of law
  • William received a B.B.A. degree from University of Notre Dame in 1962, and has been licensed for 60 years
  • William practices at Pullman & Comley, LLC in White Plains, NY

Practice Areas Explained

William Oconnor Harnisch's Areas of Practice

Each practice area below reflects the types of cases William Oconnor Harnisch 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.

William Oconnor Harnisch is one of 501,317 business attorneys indexed nationally. Browse business attorneys in New York →

Tax Law

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

William Oconnor Harnisch is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in New York →

Mergers & Acquisitions

William Oconnor Harnisch is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in New York →

International Law

International law attorneys for cross-border transactions, trade, foreign investment, and treaties.

William Oconnor Harnisch is one of 40,133 international attorneys indexed nationally. Browse international 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 White Plains 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 White Plains or all attorneys in New York.

Frequently Asked

Common questions about William Oconnor Harnisch

Where is William Oconnor Harnisch's law office located?
William Oconnor Harnisch's law practice is located in White Plains, New York. The firm is Pullman & Comley, LLC. You can contact the office directly through this profile page.
What practice areas does William Oconnor Harnisch handle?
William Oconnor Harnisch focuses on business, tax, m&a, international. Each practice area listed reflects experience handling cases of that type in New York.
How long has William Oconnor Harnisch practiced law?
William Oconnor Harnisch has 60+ years of legal experience and has been licensed since 1966.
Where did William Oconnor Harnisch go to law school?
William Oconnor Harnisch earned their education at (LL.B. New, 1965); (B.B.A., 1962).
How can I contact William Oconnor Harnisch for a consultation?
You can contact William Oconnor Harnisch 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 William Oconnor Harnisch received?
William Oconnor Harnisch's notable recognition includes: AV Preeminent.

Education

LL.B. New
Georgetown University
- 1965
B.B.A.
University of Notre Dame
- 1962

Awards

AV Preeminent

Bar Admissions

District of Columbia
Admitted: 1966
New York
Admitted: 1967
U.S. Supreme Court
Admitted: 1968
U.S. Tax Court
Admitted: 1970

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