Atty. Jon Mark Thacker
Jon Mark Thacker is a lawyer practicing business & commercial litigation, intellectual property, product liability & torts. Jon received a B.A. degree from University of Louisiana at Lafayette, and has been licensed for 35 years.
Business & Commercial Litigation & More Attorney · Serving San Jose, CA · 35+ Years Experience
Profile Summary
About Jon Mark Thacker at a Glance
Jon Mark Thacker is an Of Counsel based in San Jose, California, practicing at Ropers Majeski. They have 35+ years of legal experience, licensed to practice since 1991. Their practice focuses on business, ip, product liability, and litigation. Admitted to practice in California USDC: Eastern District of California USDC: Northern District of California USDC: Central (1991). Educated at Santa Clara University School of Law (J.D., 1991) and University of Louisiana at Lafayette B.A. (—). Active member of Memberships & Associations •State Bar of California •Santa Clara County Bar Association. Serves clients in San Jose, CA and the surrounding metropolitan area.
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About Jon Mark Thacker
- Jon Mark Thacker is a lawyer practicing business & commercial litigation, intellectual property, product liability & torts
- Jon received a B.A. degree from University of Louisiana at Lafayette, and has been licensed for 35 years
- Jon practices at Ropers Majeski in San Jose, CA
Practice Areas Explained
Jon Mark Thacker's Areas of Legal Practice
Each practice area below reflects the types of cases Jon Mark Thacker handles, with a practical overview of what that area of law involves and how it may apply to your situation in San Jose.
Business & Corporate Law in San Jose
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Jon Mark Thacker is one of 497,491 business attorneys indexed nationally. Browse business attorneys in California →
Intellectual Property in San Jose
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
Jon Mark Thacker is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in California →
Product Liability in San Jose
Jon Mark Thacker is one of 65,610 product liability attorneys indexed nationally. Browse product liability attorneys in California →
Civil Litigation in San Jose
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Jon Mark Thacker is one of 450,751 litigation attorneys indexed nationally. Browse litigation attorneys in California →
Jurisdictional Context
Why Local Counsel Matters in San Jose
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 Jose 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 Jose Courts and Legal Process
Choosing a San Jose-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 Jose or all attorneys in California.
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Professional Profile
Why Clients in San Jose Choose Jon Mark Thacker
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 Jon Mark Thacker's practice in the field of business, ip, product liability, and litigation.
Decade-Tested Legal Experience
Jon Mark Thacker brings 35+ 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 business, ip, and product liability, Jon Mark Thacker can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in San Jose
A San Jose-based practice means Jon Mark Thacker 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 Jon Mark Thacker Handles in San Jose
Below is a representative sample of the types of matters Jon Mark Thacker 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 Jon Mark Thacker directly to discuss the specifics of your situation.
Search Reference
How People Find Jon Mark Thacker Online
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Jon Mark Thacker's Practice Areas & Specializations
Education & Law School Background
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