Daniel Zeilberger, IP Attorney in Washington, District of Columbia
focused on IP, Patent, and Real Estate
Washington, DC
Trusted ip attorney serving Washington.
Practices in
Are you Daniel Zeilberger?
This profile was built from public bar records and is still unclaimed. Claim it free to control your photo, bio, and fees — and get client inquiries sent straight to you.
Quick answer
Daniel Zeilberger is an attorney based in Washington, DISTRICT OF COLUMBIA. The practice focuses on IP, Patent, and Real Estate.
- Based in
- Washington, DISTRICT OF COLUMBIA
- Experience
- attorney
- Known for
- IP · Patent · Real Estate
- Handles IP, Patent, and Real Estate matters from Washington, DISTRICT OF COLUMBIA.
- Recognized with Best Lawyers in America — Intellectual Property Law (2026).
About Daniel Zeilberger: Daniel Zeilberger is an attorney based in Washington, DISTRICT OF COLUMBIA. The practice focuses on IP, Patent, and Real Estate.
Areas of practice
Daniel's practice areas in Washington
Daniel concentrates on ip, patent, and real estate. Each area below outlines the kind of case Daniel handles, typical outcomes to expect, and how the intake process starts.
IP
View other IP attorneys
Patent
View other Patent attorneys
Real Estate
View other Real Estate attorneys
IP cases in Washington, District of Columbia
Daniel takes ip matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Daniel agrees to represent you.
Patent cases in Washington, District of Columbia
Daniel takes patent matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Daniel agrees to represent you.
Real Estate cases in Washington, District of Columbia
Daniel takes real estate matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Daniel agrees to represent you.
Biography
Daniel Zeilberger, ip attorney serving Washington
Daniel Zeilberger is an attorney based in Washington, DISTRICT OF COLUMBIA. The practice focuses on IP, Patent, and Real Estate. Daniel works from Washington, District of Columbia and takes on ip matters across the region.
Daniel Zeilberger is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law and Litigation - Patent.
Daniel, who practices law in Washington, District of Columbia, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Daniel is held by other top lawyers in the same geographic and legal practice area.
How Daniel handles ip matters
Daniel Zeilberger is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law and Litigation - Patent. Daniel, who practices law in Washington, District of Columbia, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Daniel is held by other top lawyers in the same geographic and…
Who Daniel represents
Daniel reviews new inquiries case-by-case for ip, patent, and real estate matters in Washington and the surrounding District of Columbia area.
Credentials
Credentials — where Daniel studied and practices
Georgetown University
J.D. · 2013
Daniel studied at J.D. in Georgetown University.
Law school and academic background
Daniel completed J.D. in Georgetown University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Daniel runs in District of Columbia is where that training gets applied to real client questions.
Recognition
Daniel's legal honors and published work
Daniel has received 2 formal recognitions from bar associations, industry bodies, and peer-review services.
Best Lawyers in America — Intellectual Property Law
2026
Best Lawyers in America — Litigation - Patent
2026
Legal awards and honors
Best Lawyers in America — Intellectual Property Law (2026). Best Lawyers in America — Litigation - Patent (2026).
Locations
Daniel Zeilberger's office in Washington
Daniel's primary office is at 2050 M Street NW, Washington, District of Columbia, 20036. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Daniel Zeilberger
Daniel has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.
No reviews yet
Only verified clients who have consulted with Daniel Zeilberger can leave a review.
Schedule your consultationHiring guide
How to hire Daniel Zeilberger — what to expect in your first consultation
Working with a new ip attorney should feel structured. Here's how the first two conversations with Daniel usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Daniel charges for the initial consult. That fee is credited toward representation if you retain Daniel's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Daniel will tell you what matters and what doesn't.
Questions to ask a ip attorney in Washington, District of Columbia
A short list to run through before you commit: How many ip matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for Daniel
Daniel discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in ip practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every ip matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Daniel confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Daniel's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many ip practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Daniel Zeilberger
How much does it cost to hire Daniel for a ip case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Daniel walks through the likely range during the consult so there are no surprises.
Does Daniel offer a free consultation?
Daniel charges for the initial consult; that fee is credited toward representation if you retain Daniel's office. Some ip attorneys offer free consults — check Daniel's current terms during booking.
How long do ip cases in District of Columbia typically take?
Simple ip matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Daniel gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Daniel take my case if I'm outside Washington?
Daniel is licensed in District of Columbia. Matters governed by District of Columbia law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Daniel will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with Daniel?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Daniel will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Daniel accepting new ip clients right now?
Daniel's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
IP attorneys serving Washington and Belize City in District of Columbia
Daniel handles ip matters throughout District of Columbia. Each city below is a direct link into the search page for verified ip attorneys in that community.
More counsel
Other top-rated ip attorneys in District of Columbia
If Daniel's intake is full or the fit isn't right, these ip attorneys in Washington handle similar matters. Every profile below is verified and open to consultations.

Cameron Hajaran Tousi
Washington, District of Columbia
5.0· 21

Joseph John Bottiglieri
Washington, District of Columbia
5.0· 20

Russell Randle
Washington, District of Columbia
5.0· 14

Fernand Albert Lavallee
Washington, District of Columbia
5.0· 11

Elizabeth Carol Lee
Washington, District of Columbia
5.0· 9

John Robert Hutchins
Washington, District of Columbia
5.0· 6