Three Constantine Cannon Attorneys Selected to “2025 Lawdragon 500 Leading Plaintiff Financial Lawyers” 

(NEW YORK) June 6, 2025 — Constantine Cannon is pleased to announce that three of the firm’s lawyers, Jean Kim, Marlene Koury, and Taline Sahakian, were named in the 2025 Lawdragon 500 Leading Plaintiff Financial Lawyers guide.¹ This announcement follows Ms. Sahakian’s selection to Lawdragon’s 2025 Leading Global Antitrust and Competition Lawyers guide.  

Lawdragon’s Announcement  

The 500 Leading Plaintiff Financial Lawyers honorees were selected through submissions, journalistic research, editorial vetting, and a peer review process.  

According to Lawdragon: “These are the lawyers and firms that give consumers, investors and businesses a fighting chance against corporations and other powerful entities that can sometimes seem too big to confront. Not for these lawyers. They say bring it on. 

They contest ridiculous pay packages on behalf of investors and face the ire of billionaires. They take on untouchable tech titans whose acquisition of personal data or construction of business processes have a few too many blurred lines. They challenge business moves that box out competitors.”  

Here is more info on our highlighted attorneys and their nods from Lawdragon this year: 

Jean Kim 

In the 2025 Lawdragon 500 Leading Plaintiff Financial Lawyers guide, Ms. Kim was selected in the Antitrust & Commercial Litigation practice areas. Ms. Kim has previously been selected in Lawdragon’s Plaintiff Financial Lawyers guides in 2024, 2023, 2021, and 2019 – just to name a few.  

Ms. Kim is a partner in the New York office of Constantine Cannon, concentrating on antitrust litigation and counseling and general commercial litigation. Ms. Kim has extensive experience in antitrust, First Amendment, class action, and general commercial litigation. Although many of her matters have successfully settled prior to trial, she has participated in federal trials, preliminary injunction/TRO proceedings and evidentiary hearings. Ms. Kim recently settled an antitrust consumer class action on behalf of a class of California premium payers against Sutter Health, a dominant healthcare system in Northern California, for $228.5 million.   

Ms. Kim commented: “We are honored to join our fellow colleagues included in this year’s guides and look forward to many more years of successful representation of American consumers and companies who are harmed by diminished competition.” 

Marlene Koury 

Ms. Koury is a partner in the San Francisco office of Constantine Cannon. She has been named one of the 500 Leading Plaintiff Financial Lawyers by Lawdragon for seven consecutive years, from 2019 to 2025, in the Whistleblower & Antitrust Litigation practice areas.  

Ms. Koury began her career with a focus on antitrust litigation in the healthcare sector, and went on to co-found the firm’s whistleblower practice, which has grown over the last decade into the preeminent whistleblower practice in the country. 

Ms. Koury’s practice focuses on representing whistleblowers in a range of complex matters, including anti-money laundering and Bank Secrecy Act violations, healthcare fraud involving Medicare and Medicaid reimbursement, pharmaceutical and medical device marketing, and kickbacks, and fraud in the for-profit education sector. 

Ms. Koury commented: “I am grateful for the recognition and proud to work alongside a team of lawyers at Constantine Cannon committed to advocating for whistleblowers.”  

Taline Sahakian 

This June marks Ms. Sahakian’s fourth year in the Lawdragon 500 Leading Plaintiff Financial Lawyers guide in the practice area of Antitrust, from 2022-2025. Additionally, in January, Ms. Sahakian was identified as one of the 2025 Lawdragon 500 Leading Global Antitrust & Competition Lawyers.²  

Ms. Sahakian is a partner in the New York office of Constantine Cannon. She concentrates her practice on antitrust litigation and counseling as well as general commercial litigation, and arbitration. For years, she has represented over 60 of the nation’s largest corporations as plaintiffs bringing multi-billion-dollar antitrust claims against payment card networks and banks.  The Constantine Cannon team successfully defended against summary judgment and Daubert  motions and is scheduled to go to trial in October 2025. 

Ms. Sahakian also represents whistleblowers in the government contracting and payments sectors.  

Ms. Sahakian commented: “I am truly honored to be recognized alongside my amazing colleagues.  I feel fortunate to work with colleagues I respect and admire on important and interesting cases that have significant implications for our clients.  Together, we continue to deliver the highest standards of legal service.”  

About Constantine Cannon LLP  

Constantine Cannon, with offices in New York, Washington, D.C., and San Francisco, has deep expertise in practice areas that include antitrust and complex commercial litigation, whistleblower representation, government relations, securities and e-discovery. The firm is responsible for two of the top five antitrust settlements in U.S. history.  

Constantine Cannon’s antitrust practice is internationally recognized across multiple industries including healthcare, banking, electronic payments, insurance, high tech, telecommunications, the Internet and government contracting. The firm’s Whistleblower Team has been responsible for many major successes over the past two decades, including several record recoveries for the government and the firm’s clients. In total, our representations have led to more than $1 billion in government and whistleblower recoveries, in addition to over $5 billion recovered for the firm’s other clients.  

Read Three Constantine Cannon Attorneys Selected to “2025 Lawdragon 500 Leading Plaintiff Financial Lawyers”  at constantinecannon.com