Mark Diehl Sullivan

Mark Diehl Sullivan

4.9
Rating: 7.0

Licensed for 27 years

Litigation Lawyer at Wilson, WY
Practice Areas: Litigation, Environmental and Natural Resources, Workers Compensation ... +4 more

5237 HHR Ranch Road, Wilson, WY

About Mark

Fees and Rates

Cost

Hourly Rates

$ 150-250 per hour

Contingency

25%-40%

Retainer

Sometimes


Payment Methods

  • Cash
  • Check

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Licenses

Licensed in Wyoming for 20 years

State: Wyoming

Acquired: 2005

Active

No misconduct found

Licensed in New York for 27 years

State: New York

Acquired: 1998

Delinquent

No misconduct found

Location

Mark D. Sullivan, P.C.

5237 HHR Ranch Road, Wilson, WY, 83014-9210

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Mark Diehl Sullivan's Reviews

Avvo Review Score

4.9 /5.0

31 Client Reviews

Showing 1 - 5 of 5 reviews | Construction & Development

Posted by Kenneth | January 20, 2021 | Hired Attorney | Construction & Development

Construction Litigation

After a dispute with our builder we hired Mark to handle our case. We were very satisfied with the outcome and Glad that we chose Mark to handle this for us. He was very knowledgeable in the facts and the law and handled this very professionally and presented a well thought out and strong case. Hi...s fees were very reasonable and it was a lot less stress knowing you had a qualified person leading in what can be a stressful event.

Posted by Elizabeth | October 12, 2016 | Hired Attorney | Construction & Development

Wonderful!

I hired Mark Sullivan to deal with a situation we had with a builder. He was extremely honest and very easy to work with. He settled the matter for us quickly & fairly. We are very happy with the outcome. I would not hesitate to recommend Mark to anyone.

Posted by John | October 28, 2015 | Hired Attorney | Construction & Development

Grateful Attorney from Texas

Mark did an exceptional job on a dispute I had with a construction contractor . I have been a licensed lawyer for 30+ years and Mark served me well with good advice and action. I’d highly recommend this gentlemen to anyone with a litigation problem in Wyoming.

Posted by Annette | February 14, 2013 | Construction & Development

MARK D. SULLIVAN IS AN EXCELLENT CHOICE

Mark D. Sullivan has represented our company for the past six years, enabling resolutions on various legal disputes with some of our customers in the hardware/construction arena. Prior to retaining him for legal counsel, we did our "do diligence" and discovered how extensive his background is in com...mercial litigation, including complex environmental matters. We immediately knew that Mark was the attorney to represent us concerning legal issues within the construction industry. In one extremely difficult case in particular, our company prevailed in District, as well as Supreme Court, with an affirmation in full of the District Court's judgment. We were awarded damages in full, including interest and attorney's fees and costs. This case was unusually challenging and required extensive research, writing time, and attention to detail. It is very impressive to watch Mark in action before the Courts. He always comes prepared using his skills and experience to persuasively present and argue the matters at hand. We have recommended Mark on several occasions to others requiring legal counsel. He is definitely the attorney you want representing you and standing by your side.

Posted by anonymous | February 13, 2013 | Construction & Development

Impeccable, ethical, affordable

Mark Sullivan recently defended me in a civil suit and we had a successful outcome. The suit was frivolous but it had the potential for serious consequences for my business. Mr. Sullivan was stellar from day one. He is extremely well versed in matters of construction law; he worked out a strategy tha...t would cost me far less than I anticipated, and he obtained a dismissal for me far more quickly than I expected. We worked together even though I was out of state for most of my case and in every way, he sought to diminish my anxiety and lay out a clear and compelling plan of action. I felt informed at every turn, and his personable, forthright manner made me confident I was in the right hands. Anyone would be lucky to have him as their lawyer.

See All Client Reviews

Mark Diehl Sullivan's Lawyer Endorsements

Endorse Mark
Stephen C Biggs headshot
Stephen Biggs

Litigation lawyer | Apr 29

Relationship: Worked together on matter

"Mark is an excellent lawyer and a very amiable person. Our firm worked with him as co-counsel on two cases in Wyoming. Mark has a solid knowledge of the law, is a skilled litigator, is deeply concerned for the well-being of his clients, and is a consummate professional. I would recommend him to others looking for a lawyer to represent them in Wyoming."

Jessica Rutzick headshot
Jessica Rutzick

Litigation lawyer | Feb 15

Relationship: Fellow lawyer in community

"Mark gets terrific results for his clients and is a really good person to boot."

Jeffrey Michael Norton headshot
Jeffrey Norton

General practice lawyer | Nov 04

Relationship: Friend

"I have known Mark for over 16 years and I can say unequivocally that he is one of the most naturally gifted lawyers I have ever known. His ability to craft legal arguments and understand complex legal issues is remarkable and make him a formidable adversary in and out of court. He is also a consummate professional and widely respected. Although these qualities alone would make him a good lawyer, Mark also is a committed and passionate advocate for his clients and a genuinely decent guy to boot. Accordingly, I recommend and endorse Mark without reservation."

View All Endorsements
Stephen C Biggs headshot
Stephen Biggs

Litigation lawyer

Richard R. Thomas headshot
Richard Thomas

Litigation lawyer

Jeffrey Michael Norton headshot
Jeffrey Norton

Litigation lawyer

Stephen Lawrence Kass headshot
Stephen Kass

Environmental and natural resources lawyer

Jessica Rutzick headshot
Jessica Rutzick

Litigation lawyer

David F. Defazio headshot
David Defazio

Litigation lawyer

Experience

Rating:  7.0 (Very Good)

Work Experience

2006 - Present

Partner, Mark D. Sullivan P.C.

1999 - 2006

Associate, Carter Ledyard & Milburn, LLP

1997 - 1999

Senior Watershed Attorney, Riverkeeper, Inc.

Associations

2010 - Present

Wyoming Trial Lawyers Association

2006 - Present

Teton County Bar Association

Sample of Legal Cases

Shaw Construction v. Rocky Mountain Hardware, 275 P.3d 1238 (2012)

Victory

Meyer v. Hatto, 198 P.3d 552 (2008)

Victory

RISD v. RIOC, 291 A.D. 2d 40; 735 N.Y.S.2d 83 (A.D. 1st Dept 2001)

Victory

See More Legal Cases

Education

1999

Pace University School of Law

LL.M - Master of Laws

1997

Pace University School of Law

J.D.

1993

Kenyon College

BA - Bachelor of Arts

Publications

2006

New York State Bar Association Journal (cover story) The EPA's New Clean Air Rules

Activity

Avvo Rating

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