Atty. Jonathan Milton Spenner

Atty. Jonathan Milton Spenner

Jonathan Milton Spenner is a lawyer practicing patents, biotechnology, pharmaceutical and chemical technologies. Jonathan Milton received a Ph.D. degree from Johns Hopkins University School of Medicine in 2004, and has been licensed for 17 years.

Chicago Chicago 17 yrs experience 17 year
Call (970) 286-0899 Book Appointment

Profile Summary

About Jonathan Milton Spenner at a glance

Jonathan Milton Spenner is an Associate based in Chicago, Illinois, practicing at Leydig, Voit & Mayer, Ltd.. They have 17+ years of legal experience, licensed to practice since 2009. Their practice focuses on patent. Admitted to practice in Illinois U.S. District Court, Northern District of Illinois registered to practice before U.S. Paten (2009). Educated at Fordham University School of Law (J.D., 2009) and Johns Hopkins University School of Medicine (Ph.D. Molecular, 2004). Active member of IPO, Intellectual Property Owners Association. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Jonathan Milton Spenner is a lawyer practicing patents, biotechnology, pharmaceutical and chemical technologies
  • Jonathan Milton received a Ph.D. degree from Johns Hopkins University School of Medicine in 2004, and has been licensed for 17 years
  • Jonathan Milton practices at Leydig, Voit & Mayer, Ltd. in Chicago, IL

Practice Areas Explained

Jonathan Milton Spenner's Areas of Practice

Each practice area below reflects the types of cases Jonathan Milton Spenner handles, with a brief overview of what that area of law covers.

Patent Law

Jonathan Milton Spenner is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive 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 substantive 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 Jonathan Milton Spenner

Where is Jonathan Milton Spenner's law office located?
Jonathan Milton Spenner's law practice is located in Chicago, Illinois. The firm is Leydig, Voit & Mayer, Ltd.. You can contact the office directly through this profile page.
What practice areas does Jonathan Milton Spenner handle?
Jonathan Milton Spenner focuses on patent. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Jonathan Milton Spenner practiced law?
Jonathan Milton Spenner has 17+ years of legal experience and has been licensed since 2009.
Where did Jonathan Milton Spenner go to law school?
Jonathan Milton Spenner earned their education at (J.D., 2009); (Ph.D. Molecular, 2004).
How can I contact Jonathan Milton Spenner for a consultation?
You can contact Jonathan Milton Spenner 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.
Fordham University School of Law
- 2009
Ph.D. Molecular
Johns Hopkins University School of Medicine
- 2004

Bar Admissions

Illinois U.S. District Court, Northern District of Illinois registered to practice before U.S. Paten
Admitted: 2009

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