.

Sonthonax B. SaintGermain

Portrait of Sonthonax B. SaintGermain

Sontho is a member of the firm’s Appellate Advocacy and Post-Trial Practice Group in the Professional Liability Department. He has litigated numerous appeals in state and federal appellate courts. In addition to his extensive appellate practice, Sontho provides litigation support in cases at the trial court level.

Prior to joining the firm, Sontho practiced in product liability with a regional firm in Illinois and Missouri. Before entering private practice, he was an appellate attorney with Illinois’ Office of the State Appellate Defender and subsequently at the Office of the Federal Defender for the Middle District of Florida. Sontho served as a Judicial Law Clerk for the Honorable Mary McDade of the Illinois Third District Court of Appeal in Peoria, Illinois. 

Sontho graduated from the Florida State University with a Bachelor of Science in Economics and a Master of Science in Applied Economics. He subsequently attended the University of Illinois, College of Law in Champaign, Illinois where he obtained his juris doctor.

    • University of Illinois College of Law at Urbana-Champaign (J.D., 2014)
    • Florida State University (M.Sc., 2009)
    • Florida State University (B.S., 2008)
    • Illinois, 2015
    • Florida, 2022
    • Missouri, 2023
    • French (Native Fluent)
    • Haitian Creole (Native Fluent)
  • Assisted in securing a favorable defense verdict following a Palm Beach County jury trial with over 13 witnesses, including 5 experts, and over 5,000 pages of exhibits, involving a high-value property damage claim. The Plaintiff sought more than $1.3 million in damages after water from a broken pipe spigot on an upstairs balcony damaged the master suite of Plaintiff’s 3400 square foot, $4.5 million luxury oceanfront condominium. Because liability was stipulated, the trial focused solely on the amount and scope of damages, consisting of repair /remediation costs to the master suite together with Plaintiff's claim for 21-months of loss of use at a valuation of $33,000.00 per month totaling $673,000.00. The defense successfully demonstrated that the Plaintiff was not entitled to compensation for the majority of the claimed loss-of-use period (16-months). The jury awarded only 5-months of loss-of-use damages, along with $199,615 in repair and restoration costs, substantially reducing the plaintiff's overall recovery to only $364,615.

Firm Highlights

Thought Leadership

Appellate Division Affirms Dismissal of Legal Malpractice Counterclaim Against Martin Law Firm

In Martin v. Loury, 2026 N.J. Super. Unpub. LEXIS 1617 (App. Div. July 15, 2026), Martin Law Firm represented Kirk Loury in an employment matter Mr. Loury filed against his former employer, Concord Equity Group Advisors LLC (“Concord”). The allegations included, among other things, that Loury was not fairly compensated for his employment with Concord. After a bench trial finding in Loury’s favor, the Appellate Division remanded this matter in February 2016 for a second trial. During the second trial, Concord CEO, Lee Argush, testified to lower compensation estimate than first trial. On remand, the second trial judge awarded Mr. Loury the same damages as the first judge, finding Mr. Argush not credible. After the findings during the second trial, Martin Law Firm filed an action against Mr. Loury to recover legal fees and costs of representing Mr. Loury in a second bench trial and Mr. Loury filed a counterclaim against Martin Law Firm for legal malpractice, alleging he should have received an even higher award in the second bench trial. In this allegation, Mr. Loury, through his expert, claimed that Martin Law Firm should have recalled Mr. Loury to the stand to rebut Mr. Argush’s testimony to allege an alternative theory of damages. Mr. Loury’s expert admitted that the second judge already rejected Mr. Argush's theory and accepted Loury's damages theory. The trial court barred Mr. Loury’s expert and dismissed Loury's counterclaim with prejudice before convening the collection trial, and the jury ruled in Martin Law Firm’s favor. Mr. Loury appealed the trial court's pretrial rulings barring his liability expert from testifying in support of his legal malpractice counterclaim, denying his motion for summary judgment on that counterclaim, and denying his motion to amend his counterclaim by adding attorney Joseph A. Martin as a codefendant. In affirming the trial court’s decision, the Appellate Division held that the trial court properly excluded Loury’s expert testimony in the counterclaim against Martin Law Firm because the expert could not explain how calling Loury as a rebuttal witness would have increased damages when the second judge already rejected Mr. Argush's testimony and accepted Loury's damages theory, making the expert’s causation opinion speculative. The Appellate Division also held that the trial court properly denied Mr. Loury's summary judgment motion on his malpractice counterclaim because reasonable minds could differ on whether Mr. Martin's alleged failures would have changed the second judge's damages award, given the judge already found Mr. Argush not credible, creating genuine factual disputes precluding summary judgment. Also, the Appellate Division held that the trial court properly denied Loury's May 2023 motion to add Joseph Martin individually because the statute of limitations expired in February 2022, six years after the 2016 appellate remand when Mr. Loury incurred new legal costs, and relation back did not apply because Mr. Loury knew Mr. Martin's identity throughout and strategically chose to sue only Martin Law Firm in his 2019 counterclaim.