Atty. Philip Jay Crihfield

Atty. Philip Jay Crihfield

Philip Jay Crihfield is a lawyer practicing financial markets and services, intellectual property, technology transactions and 3 other areas of law. Philip received a B.S. degree from Purdue University in 1967, and has been licensed for 55 years.

Chicago Chicago 55 yrs experience 55 year
Call (312) 535-4941 Book Appointment

Profile Summary

About Philip Jay Crihfield at a glance

Philip Jay Crihfield is a Senior Counsel based in Chicago, Illinois, practicing at Sidley Austin LLP. They have 55+ years of legal experience, licensed to practice since 1971. Their practice focuses on ip. Admitted to practice in Illinois registered to practice before U.S. Patent and Trademark Office (1971). Educated at John Marshall Law School (J.D., 1971) and Purdue University (B.S., 1967). Recognitions include AV Preeminent. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Philip Jay Crihfield is a lawyer practicing financial markets and services, intellectual property, technology transactions and 3 other areas of law
  • Philip received a B.S. degree from Purdue University in 1967, and has been licensed for 55 years
  • Philip practices at Sidley Austin LLP in Chicago, IL

Practice Areas Explained

Philip Jay Crihfield's Areas of Practice

Each practice area below reflects the types of cases Philip Jay Crihfield 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.

Philip Jay Crihfield is one of 106,079 ip attorneys indexed nationally. Browse ip 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 Philip Jay Crihfield

Where is Philip Jay Crihfield's law office located?
Philip Jay Crihfield'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 Philip Jay Crihfield handle?
Philip Jay Crihfield focuses on ip. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Philip Jay Crihfield practiced law?
Philip Jay Crihfield has 55+ years of legal experience and has been licensed since 1971.
Where did Philip Jay Crihfield go to law school?
Philip Jay Crihfield earned their education at (J.D., 1971); (B.S., 1967).
How can I contact Philip Jay Crihfield for a consultation?
You can contact Philip Jay Crihfield 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 Philip Jay Crihfield received?
Philip Jay Crihfield's notable recognition includes: AV Preeminent.

Education

J.D.
John Marshall Law School
- 1971
B.S.
Purdue University
- 1967

Awards

AV Preeminent

Bar Admissions

Illinois registered to practice before U.S. Patent and Trademark Office
Admitted: 1971

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