Atty. David E. Heisey
David E. Heisey is a lawyer practicing intellectual property, ip licensing, technology and commercial transactions, patent litigation and 8 other areas of law.
Intellectual Property & More Attorney · Serving San Diego, CA · 28+ Years Experience
Profile Summary
About David E. Heisey at a Glance
David E. Heisey is a Partner based in San Diego, California, practicing at Sheppard Mullin. They have 28+ years of legal experience, licensed to practice since 1998. Their practice focuses on patent, trademark, ip, trade secrets, and ip licensing. Admitted to practice in Illinois United States Patent , Trademark Office (1998) and California (2000). Educated at Loyola University Chicago (J.D., 1998) and University of Illinois - Champaign (B.S. Industrial, 1993). Active member of Memberships •Member, TechAmerica •Member, American Intellectual Property Law Association •Member, San Diego Intellectual Property Law Association. Serves clients in San Diego, CA and the surrounding metropolitan area.
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About David E. Heisey
- David E. Heisey is a lawyer practicing intellectual property, ip licensing, technology and commercial transactions, patent litigation and 8 other areas of law
- David received a B.S. degree from University of Illinois - Champaign in 1993, and has been licensed for 28 years
- David practices at Sheppard Mullin in San Diego, CA
Practice Areas Explained
David E. Heisey's Areas of Legal Practice
Each practice area below reflects the types of cases David E. Heisey handles, with a practical overview of what that area of law involves and how it may apply to your situation in San Diego.
Patent Law in San Diego
David E. Heisey is one of 20,632 patent attorneys indexed nationally. Browse patent attorneys in California →
Trademark Law in San Diego
David E. Heisey is one of 23,086 trademark attorneys indexed nationally. Browse trademark attorneys in California →
Intellectual Property in San Diego
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
David E. Heisey is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in California →
Trade Secrets in San Diego
David E. Heisey is one of 6,604 trade secrets attorneys indexed nationally. Browse trade secrets attorneys in California →
IP Licensing in San Diego
David E. Heisey is one of 2,726 ip licensing attorneys indexed nationally. Browse ip licensing attorneys in California →
Jurisdictional Context
Why Local Counsel Matters in San Diego
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 Diego 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 Diego Courts and Legal Process
Choosing a San Diego-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 Diego or all attorneys in California.
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Professional Profile
Why Clients in San Diego Choose David E. Heisey
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 David E. Heisey's practice in the field of patent, trademark, ip, trade secrets, and ip licensing.
Decade-Tested Legal Experience
David E. Heisey brings 28+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in Illinois United States Patent , Trademark Office and California, David E. Heisey can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering patent, trademark, and ip, David E. Heisey can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in San Diego
A San Diego-based practice means David E. Heisey 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 David E. Heisey Handles in San Diego
Below is a representative sample of the types of matters David E. Heisey 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 David E. Heisey directly to discuss the specifics of your situation.
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How People Find David E. Heisey Online
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David E. Heisey's Practice Areas & Specializations
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