Atty. John Michael Grenfell

Atty. John Michael Grenfell

John Michael Grenfell is a lawyer practicing litigation, antitrust & competition, appellate and 1 other area of law. John received a A.B. degree from Stanford University in 1976, and has been licensed for 47 years.

San Francisco San Francisco 47 yrs experience 47 year
Call (424) 600-2926 Book Appointment

Antitrust & Competition & More Attorney · Serving San Francisco, CA · 47+ Years Experience

Profile Summary

About John Michael Grenfell at a Glance

John Michael Grenfell is a Partner based in San Francisco, California, practicing at Pillsbury Winthrop Shaw Pittman LLP. They have 47+ years of legal experience, licensed to practice since 1979. Their practice focuses on litigation and appellate. Admitted to practice in California (1979). Educated at Harvard Law School (J.D., 1979) and Stanford University (A.B., 1976). Recognitions include AV Preeminent. Serves clients in San Francisco, CA and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About John Michael Grenfell

  • John Michael Grenfell is a lawyer practicing litigation, antitrust & competition, appellate and 1 other area of law
  • John received a A.B. degree from Stanford University in 1976, and has been licensed for 47 years
  • John practices at Pillsbury Winthrop Shaw Pittman LLP in San Francisco, CA

Practice Areas Explained

John Michael Grenfell's Areas of Legal Practice

Each practice area below reflects the types of cases John Michael Grenfell handles, with a practical overview of what that area of law involves and how it may apply to your situation in San Francisco.

Civil Litigation in San Francisco

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

John Michael Grenfell is one of 450,750 litigation attorneys indexed nationally. Browse litigation attorneys in California →

Appellate Practice in San Francisco

Appellate attorneys for civil and criminal appeals at state and federal court.

John Michael Grenfell is one of 85,572 appellate attorneys indexed nationally. Browse appellate attorneys in California →

Jurisdictional Context

Why Local Counsel Matters in San Francisco

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

San Francisco Courts and Legal Process

Choosing a San Francisco-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.

Looking for additional California attorneys? Browse all attorneys in San Francisco or all attorneys in California.

Frequently Asked

Common Questions About John Michael Grenfell

Where is John Michael Grenfell's law office located?
John Michael Grenfell's law practice is located in San Francisco, California. The firm is Pillsbury Winthrop Shaw Pittman LLP. You can contact the office directly through this profile page.
What practice areas does John Michael Grenfell handle?
John Michael Grenfell focuses on litigation, appellate. Each practice area listed reflects experience handling cases of that type in California.
How long has John Michael Grenfell practiced law?
John Michael Grenfell has 47+ years of legal experience and has been licensed since 1979.
Where did John Michael Grenfell go to law school?
John Michael Grenfell earned their education at (J.D., 1979); (A.B., 1976).
How can I contact John Michael Grenfell for a consultation?
You can contact John Michael Grenfell 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 John Michael Grenfell received?
John Michael Grenfell's notable recognition includes: AV Preeminent.

Professional Profile

Why Clients in San Francisco Choose John Michael Grenfell

Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish John Michael Grenfell's practice in the field of litigation and appellate.

Decade-Tested Legal Experience

John Michael Grenfell brings 47+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Broad Practice Area Coverage

Covering litigation and appellate, John Michael Grenfell can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in San Francisco

A San Francisco-based practice means John Michael Grenfell attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.

Search Reference

How People Find John Michael Grenfell Online

Prospective clients searching for legal help in San Francisco commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like John Michael Grenfell.

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If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with John Michael Grenfell directly.

John Michael Grenfell's Practice Areas & Specializations

Education & Law School Background

J.D.
Harvard Law School
- 1979
A.B.
Stanford University
- 1976

Awards & Professional Honors

AV Preeminent

Bar Admissions & Licensed Jurisdictions

California
Admitted: 1979

Client Reviews & Ratings — John Michael Grenfell

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