Atty. Dennis M. Flannery

Atty. Dennis M. Flannery

Dennis M. Flannery is a lawyer practicing civil practice, antitrust / trade law, intellectual property and 1 other area of law.

Washington Washington 62 yrs experience 62 year
Call (443) 909-4915 Book Appointment

Profile Summary

About Dennis M. Flannery at a glance

Dennis M. Flannery is a Senior Counsel based in Washington, District of Columbia, practicing at Wilmerhale. They have 62+ years of legal experience, licensed to practice since 1964. Their practice focuses on ip, securities, litigation, and consumer. Admitted to practice in New York (1964) and District of Columbia (1968). Educated at University of Pennsylvania Law School (J.D., 1964) and Fordham University (B.A., 1961). Recognitions include AV Preeminent. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Dennis M. Flannery is a lawyer practicing civil practice, antitrust / trade law, intellectual property and 1 other area of law
  • Dennis received a B.A. degree from Fordham University in 1961, and has been licensed for 62 years
  • Dennis practices at WilmerHale in Washington, DC

Practice Areas Explained

Dennis M. Flannery's Areas of Practice

Each practice area below reflects the types of cases Dennis M. Flannery handles, with a brief overview of what that area of law covers.

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

Dennis M. Flannery is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in District of Columbia →

Securities Law

Dennis M. Flannery is one of 64,529 securities attorneys indexed nationally. Browse securities attorneys in District of Columbia →

Civil Litigation

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

Dennis M. Flannery is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in District of Columbia →

Consumer Protection

Consumer protection attorneys for fraud, lemon law, debt harassment, and deceptive trade practices.

Dennis M. Flannery is one of 50,607 consumer attorneys indexed nationally. Browse consumer attorneys in District of Columbia →

Jurisdictional Context

Why local counsel matters in District of Columbia

Practicing law in District of Columbia. Legal matters in District of Columbia are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Washington are typically filed in the local municipal court or the appropriate District of Columbia state district court, depending on subject matter and amount in controversy. An attorney licensed in District of Columbia 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 District of Columbia courts without local counsel or pro hac vice admission.

Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.

Frequently Asked

Common questions about Dennis M. Flannery

Where is Dennis M. Flannery's law office located?
Dennis M. Flannery's law practice is located in Washington, District of Columbia. The firm is Wilmerhale. You can contact the office directly through this profile page.
What practice areas does Dennis M. Flannery handle?
Dennis M. Flannery focuses on ip, securities, litigation, consumer. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Dennis M. Flannery practiced law?
Dennis M. Flannery has 62+ years of legal experience and has been licensed since 1964.
Where did Dennis M. Flannery go to law school?
Dennis M. Flannery earned their education at (J.D., 1964); (B.A., 1961).
How can I contact Dennis M. Flannery for a consultation?
You can contact Dennis M. Flannery 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 Dennis M. Flannery received?
Dennis M. Flannery's notable recognition includes: AV Preeminent.

Education

J.D.
University of Pennsylvania Law School
- 1964
B.A.
Fordham University
- 1961

Awards

AV Preeminent

Bar Admissions

New York
Admitted: 1964
District of Columbia
Admitted: 1968

Reviews

5.0
1 Review
5 0
4 0
3 0
2 0
1 0
These reviews belong to platform users; they do not constitute advertisement or promotion for the attorney. Opinions are published for informational purposes only.

No reviews yet.