Atty. Kenneth E. "Ken" Keller
Kenneth E. Keller is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property and Litigation - Patent.
Litigation - Patent & More Attorney · Serving San Francisco, CA
Profile Summary
About Kenneth E. "Ken" Keller at a Glance
Kenneth E. "Ken" Keller is a patent and ip attorney based in San Francisco, California, practicing at Pillsbury. Educated at University of California Berkeley (J.D., 1976). Recognitions include Best Lawyers in America — Litigation - Intellectual Property (2026), Best Lawyers in America — Litigation - Patent (2026), and Best Lawyers in America — Additional Areas of Practice: (2026). Serves clients in San Francisco, CA and the surrounding metropolitan area.
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About Kenneth E. "Ken" Keller
- Kenneth E. Keller is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property and Litigation - Patent
- Kenneth E., who practices law in San Francisco, California, has been recognized since 2021
- This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kenneth E. is held by other top lawyers in the same geographic and legal practice area
Practice Areas Explained
Kenneth E. "Ken" Keller's Areas of Legal Practice
Each practice area below reflects the types of cases Kenneth E. "Ken" Keller handles, with a practical overview of what that area of law involves and how it may apply to your situation in San Francisco.
Patent Law in San Francisco
Kenneth E. "Ken" Keller is one of 20,632 patent attorneys indexed nationally. Browse patent attorneys in California →
Intellectual Property in San Francisco
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
Kenneth E. "Ken" Keller is one of 105,285 ip attorneys indexed nationally. Browse ip 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.
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Professional Profile
Why Clients in San Francisco Choose Kenneth E. "Ken" Keller
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 Kenneth E. "Ken" Keller's practice in the field of patent and ip.
Broad Practice Area Coverage
Covering patent and ip, Kenneth E. "Ken" Keller 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 Kenneth E. "Ken" Keller attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues Kenneth E. "Ken" Keller Handles in San Francisco
Below is a representative sample of the types of matters Kenneth E. "Ken" Keller has experience with under California law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact Kenneth E. "Ken" Keller directly to discuss the specifics of your situation.
Search Reference
How People Find Kenneth E. "Ken" Keller Online
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Kenneth E. "Ken" Keller's Practice Areas & Specializations
Education & Law School Background
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