John Clare Heymann, Energy Attorney in Corpus Christi, Texas
Over 37 years of legal practice · focused on Energy and Environmental · 4.6/5 rating from 4 verified client reviews
Managing PartneratUpton, Mickits & Heymann, L.L.P.
Corpus Christi, TX
Practicing energy in Corpus Christi since 1989.
- 37+
- Years practicing
- 4.6 ★
- 4 client reviews
- 3
- Bar admissions
Practices in
Are you John Clare Heymann?
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Quick answer
John Clare Heymann is a managing partner based in Corpus Christi, TX. The practice focuses on Energy and Environmental. John has over 37 years of legal experience. Currently practicing at Upton, Mickits & Heymann, L.L.P.. Rated 4.6 out of 5 from 4 client reviews.
- Based in
- Corpus Christi, TX
- Experience
- over 37 years
- Known for
- Energy · Environmental
- Handles Energy and Environmental matters from Corpus Christi, TX.
- Over 37 years of practice as a licensed attorney.
- Recognized with AV Preeminent.
About John Clare Heymann: John Clare Heymann is a managing partner based in Corpus Christi, TX. The practice focuses on Energy and Environmental. John has over 37 years of legal experience. Currently practicing at Upton, Mickits & Heymann, L.L.P.. Rated 4.6 out of 5 from 4 client reviews.
Areas of practice
Practice areas handled by John Clare Heymann
John concentrates on energy and environmental. Each area below outlines the kind of case John handles, typical outcomes to expect, and how the intake process starts.
Energy cases in Corpus Christi, Texas
John takes energy matters in Corpus Christi, Texas. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.
Environmental cases in Corpus Christi, Texas
John takes environmental matters in Corpus Christi, Texas. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.
Biography
About John Clare Heymann — Over 37 years of Texas energy experience
John Clare Heymann is a managing partner based in Corpus Christi, TX. The practice focuses on Energy and Environmental. John has over 37 years of legal experience. Currently practicing at Upton, Mickits & Heymann, L.L.P.. Rated 4.6 out of 5 from 4 client reviews.
Mr. John Clare Heymann is a lawyer practicing oil and gas law, natural resources, environmental and natural resources. John received a B.B.A. degree from University of Texas at Austin in 1974, and has been licensed for 37 years. John practices at Upton, Mickits & Heymann, L.L.P. in Corpus Christi, TX.
How John handles energy matters
Mr. John Clare Heymann is a lawyer practicing oil and gas law, natural resources, environmental and natural resources. John received a B.B.A. degree from University of Texas at Austin in 1974, and has been licensed for 37 years. John practices at Upton, Mickits & Heymann, L.L.P. in Corpus Christi, TX.
The kind of cases John takes
John reviews new inquiries case-by-case for energy and environmental matters in Corpus Christi and the surrounding Texas area.
Credentials
John Clare Heymann's legal education and bar admissions
University of Texas at Austin
J.D. · 1988
University of Texas at Austin
B.B.A. · 1974
Jurisdictions
John's state bar admissions
U.S. Court of Appeal
1989 · ACTIVE
U.S. District Court,
1989 · ACTIVE
Texas
1989 · ACTIVE
John studied at J.D. in University of Texas at Austin and B.B.A. in University of Texas at Austin.
Law school and academic background
John completed J.D. in University of Texas at Austin and B.B.A. in University of Texas at Austin. Formal legal training is one signal of substantive knowledge — the day-to-day practice John runs in Texas is where that training gets applied to real client questions.
Recognition
Awards, publications, and recognition of John Clare Heymann
John has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
AV Preeminent
Legal awards and honors
AV Preeminent.
Affiliations
John's professional memberships and bar associations
Corpus Christi and American
Member, Section on: Natural Resources Law) Bar Associations State Bar of Texas (Member, Sections on: Oil and Gas Law Mineral Law · membership
Locations
John Clare Heymann's office in Corpus Christi
John's primary office is at Frost Bank Plaza, Suite 450, 802 North Carancahua, Corpus Christi, TX, 78401. In-person meetings are by appointment; a phone intake usually comes first.
Upton, Mickits & Heymann, L.L.P.
Frost Bank Plaza, Suite 450, 802 North Carancahua
Corpus Christi, TX 78401
Open in Google MapsClient feedback
Client reviews of John Clare Heymann — 4.6/5 rating from 4 verified client reviews
Every review below is from a verified client of John. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing energy attorneys in Corpus Christi.
4.6
4 client reviews
Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once John Clare Heymann claims this profile.
Read all reviewsHiring guide
How to hire John Clare Heymann — what to expect in your first consultation
Working with a new energy attorney should feel structured. Here's how the first two conversations with John usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
John charges for the initial consult. That fee is credited toward representation if you retain John'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; John will tell you what matters and what doesn't.
Questions to ask a energy attorney in Corpus Christi, Texas
A short list to run through before you commit: How many energy 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 John
John discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in energy practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every energy 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. John confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
John's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many energy practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about John Clare Heymann
How much does it cost to hire John for a energy case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. John walks through the likely range during the consult so there are no surprises.
Does John offer a free consultation?
John charges for the initial consult; that fee is credited toward representation if you retain John's office. Some energy attorneys offer free consults — check John's current terms during booking.
How long do energy cases in Texas typically take?
Simple energy 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. John gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can John take my case if I'm outside Corpus Christi?
John is licensed in Texas. Matters governed by Texas law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — John 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 John?
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. John will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is John accepting new energy clients right now?
John's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Energy attorneys serving Corpus Christi, Houston and Dallas in Texas
John handles energy matters throughout Texas. Each city below is a direct link into the search page for verified energy attorneys in that community.
More counsel
Other top-rated energy attorneys in Texas
If John's intake is full or the fit isn't right, these energy attorneys in Corpus Christi handle similar matters. Every profile below is verified and open to consultations.





