
Jon Mark Thacker, Business Attorney in San Jose, California
Over 35 years of legal practice · focused on Business, IP, and Litigation
Of CounselatRopers Majeski
San Jose, CA
Practicing business in San Jose since 1991.
- 35+
- Years practicing
- 1
- Bar admission
Practices in
Are you Jon Mark Thacker?
This profile was built from public bar records and is still unclaimed. Claim it free to control your photo, bio, and fees — and get client inquiries sent straight to you.
Quick answer
Jon Mark Thacker is an of counsel based in San Jose, CA. The practice focuses on Business, IP, and Litigation. Jon has over 35 years of legal experience. Currently practicing at Ropers Majeski.
- Based in
- San Jose, CA
- Experience
- over 35 years
- Known for
- Business · IP · Litigation
- Handles Business, IP, and Litigation matters from San Jose, CA.
- Over 35 years of practice as a licensed attorney.
About Jon Mark Thacker: Jon Mark Thacker is an of counsel based in San Jose, CA. The practice focuses on Business, IP, and Litigation. Jon has over 35 years of legal experience. Currently practicing at Ropers Majeski.
Areas of practice
Practice areas handled by Jon Mark Thacker
Jon concentrates on business, ip, litigation, and product liability. Each area below outlines the kind of case Jon handles, typical outcomes to expect, and how the intake process starts.
Business
View other Business attorneys
IP
View other IP attorneys
Litigation
View other Litigation attorneys
Product Liability
View other Product Liability attorneys
Business cases in San Jose, California
Jon takes business matters in San Jose, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jon agrees to represent you.
IP cases in San Jose, California
Jon takes ip matters in San Jose, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jon agrees to represent you.
Litigation cases in San Jose, California
Jon takes litigation matters in San Jose, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jon agrees to represent you.
Product Liability cases in San Jose, California
Jon takes product liability matters in San Jose, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jon agrees to represent you.
Biography
About Jon Mark Thacker — Over 35 years of California business experience
Jon Mark Thacker is an of counsel based in San Jose, CA. The practice focuses on Business, IP, and Litigation. Jon has over 35 years of legal experience. Currently practicing at Ropers Majeski.
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.
How Jon handles business matters
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.
Who Jon represents
Jon reviews new inquiries case-by-case for business, ip, and litigation matters in San Jose and the surrounding California area.
Credentials
Jon Mark Thacker's legal education and bar admissions
Santa Clara University School of Law
J.D. · 1991
University of Louisiana at Lafayette B.A.
—
Jurisdictions
Jon's state bar admissions
California USDC: Eas
1991 · ACTIVE
Jon studied at J.D. in Santa Clara University School of Law and — in University of Louisiana at Lafayette B.A..
Law school and academic background
Jon completed J.D. in Santa Clara University School of Law and — in University of Louisiana at Lafayette B.A.. Formal legal training is one signal of substantive knowledge — the day-to-day practice Jon runs in California is where that training gets applied to real client questions.
Affiliations
Jon's professional memberships and bar associations
Memberships & Associations •State Bar of California •Santa Clara County Bar Association
membership
Locations
Jon Mark Thacker's office in San Jose
Jon's primary office is at 50 West San Fernando Street, Suite 1300, San Jose, CA, 95113. In-person meetings are by appointment; a phone intake usually comes first.
Ropers Majeski
50 West San Fernando Street, Suite 1300
San Jose, CA 95113
Open in Google MapsClient feedback
Client reviews of Jon Mark Thacker
Jon has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.
No reviews yet
Only verified clients who have consulted with Jon Mark Thacker can leave a review.
Schedule your consultationHiring guide
How to hire Jon Mark Thacker — what to expect in your first consultation
Working with a new business attorney should feel structured. Here's how the first two conversations with Jon usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Jon charges for the initial consult. That fee is credited toward representation if you retain Jon's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Jon will tell you what matters and what doesn't.
Questions to ask a business attorney in San Jose, California
A short list to run through before you commit: How many business matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for Jon
Jon discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in business practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every business matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Jon confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Jon's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many business practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Jon Mark Thacker
How much does it cost to hire Jon for a business case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Jon walks through the likely range during the consult so there are no surprises.
Does Jon offer a free consultation?
Jon charges for the initial consult; that fee is credited toward representation if you retain Jon's office. Some business attorneys offer free consults — check Jon's current terms during booking.
How long do business cases in California typically take?
Simple business matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Jon gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Jon take my case if I'm outside San Jose?
Jon is licensed in California. Matters governed by California law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Jon will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with Jon?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Jon will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Jon accepting new business clients right now?
Jon's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Business attorneys serving San Jose, Los Angeles and San Francisco in California
Jon handles business matters throughout California. Each city below is a direct link into the search page for verified business attorneys in that community.
- San Jose5,009 attorneys
- Los Angeles39,975 attorneys
- San Francisco26,380 attorneys
- San Diego16,903 attorneys
- Sacramento10,561 attorneys
- Irvine6,831 attorneys
- Oakland5,709 attorneys
- Palo Alto4,084 attorneys
- Beverly Hills3,348 attorneys
- Newport Beach3,106 attorneys
- Pasadena2,894 attorneys
- Santa Monica2,756 attorneys
More counsel
Other top-rated business attorneys in California
If Jon's intake is full or the fit isn't right, these business attorneys in San Jose handle similar matters. Every profile below is verified and open to consultations.
Douglas MacMillan Borthwick
Santa Ana, California
5.0· 118

David Payab, Esq.
Woodland Hills, California
5.0· 108

Bobby B. Saadian, Esq.
Los Angeles, California
5.0· 52

Jeffrey Robert Loew
San Mateo, California
5.0· 47

Michael Brett Abramson
San Diego, California
5.0· 39

Gregory M. Garrison
Camarillo, California
5.0· 38