Atty. Daniel A. Greenfield

Atty. Daniel A. Greenfield

Daniel A. Greenfield is a lawyer practicing intellectual property litigation, itc section 337, patent assessment and due diligence and 2 other areas of law.

Chicago Chicago 18 J. Erfahrung 18 year
Call (872) 351-5469 Book Appointment

Profile Summary

About Daniel A. Greenfield at a glance

Daniel A. Greenfield is an Associate based in Chicago, Illinois, practforg at Sidley Austin LLP. They have 18+ years of legal experience, licensed to practice since 2008. Their practice focuses on patent, ip, m&a, and trade secrets. Admitted to practice in Illinois (2008) and U.S. Court of Appeals, Federal Circuit registered to practice before the U.S. Patent and Trademark O (2009). Educated at Northwestern University School of Law (J.D., 2008) and New York University (M.F.A. Northwestern, 1999). Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

Über uns

  • Daniel A. Greenfield is a lawyer practicing intellectual property litigation, itc section 337, patent assessment and due diligence and 2 other areas of law
  • Daniel A. received a M.F.A. degree from New York University in 1999, and has been licensed for 18 years
  • Daniel A. practices at Sidley Austin LLP in Chicago, IL

Practice Areas Explained

Daniel A. Greenfield's Areas of Practice

Each practice area below reflects the types of cases Daniel A. Greenfield handles, with a brief overview of what that area of law covers.

Patent Law

Daniel A. Greenfield is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Illinois →

Intellectual Property

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

Daniel A. Greenfield is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Illinois →

Mergers & Acquisitions

Daniel A. Greenfield is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in Illinois →

Trade Secrets

Daniel A. Greenfield is one of 6,644 trade secrets attorneys indexed nationally. Browse trade secrets attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

Practforg law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantiand law. Cases originating in Chicago are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantiand law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.

Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about Daniel A. Greenfield

Where is Daniel A. Greenfield's law office located?
Daniel A. Greenfield's law practice is located in Chicago, Illinois. The firm is Sidley Austin LLP. You can contact the office directly through this profile page.
What practice areas does Daniel A. Greenfield handle?
Daniel A. Greenfield focuses on patent, ip, m&a, trade secrets. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Daniel A. Greenfield practiced law?
Daniel A. Greenfield has 18+ years of legal experience and has been licensed since 2008.
Where did Daniel A. Greenfield go to law school?
Daniel A. Greenfield earned their education at (J.D., 2008); (M.F.A. Northwestern, 1999).
How can I contact Daniel A. Greenfield for a consultation?
You can contact Daniel A. Greenfield 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.
Northwestern University School of Law
- 2008
M.F.A. Northwestern
New York University
- 1999

Bar Admissions

Illinois
Admitted: 2008
U.S. Court of Appeals, Federal Circuit registered to practice before the U.S. Patent and Trademark O
Admitted: 2009

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