Steven R. DeLott

Regeneron and a South Korea-based rival it had accused of infringing several patents covering the U.S. biotech company's top eye medication Eylea have agreed to a settlement to put an end to the case filed in West Virginia federal court. U.S. District Judge Thomas S. Kleeh on Tuesday signed off on a stipulation filed by Regeneron and Celltrion Inc. to dismiss Regeneron's case without prejudice, and Regeneron said in a statement that the parties reached a confidential settlement. Regeneron said in the statement that Celltrion will be allowed to sell a biosimilar of Eylea starting on the final day of 2026. "Regeneron has invested many years of effort into its design and development of Eylea and remains committed to actively enforcing its intellectual property rights," Regeneron said. Eylea, which was first approved by the U.S. Food and Drug Administration in 2011, helps treat eye disorders and prevent vision loss and permanent blindness through a genetically engineered fusion protein called aflibercept. Regeneron sued biosimilar applicant Celltrion in 2023, alleging its biosimilar would infringe a host of patents covering Eylea. Counsel for Celltrion did not immediately respond to requests for comment Tuesday. The patents in-suit are U.S. Patent Nos. 9,222,106, 9,254,338, 9,315,281, 9,816,110, 10,130,68, 10,415,055, 10,464,992, 10,669,594, 10,828,345, 10,888,601, 10,927,342, 11,053,280, 11,066,458, 11,084,865, 11,104,715, 11,174,283, 11,253,572, 11,299,532, 11,306,135, 11,312,936, 11,332,771, 11,459,374, 11,472,861, 11,485,770, 11,505,593, 11,525,833, 11,535,663, 11,542,317, 11,548,932, 11,555,176, 11,559,564, 11,707,506, 11,732,024, 11,753,459, 11,769,597, 11,788,102, 11,793,926 and 7,070,959. Regeneron is represented by Ellen E. Oberwetter, Thomas S. Fletcher, Andrew V. Trask, Teagan J. Gregory, Shaun P. Mahaffy, Kathryn S. Kayali, Arthur J. Argall III, Adam Pan, Rhochelle Krawetz and Jennalee Beazley of Williams & Connolly LLP, Elizabeth Stotland Weiswasser, Christopher M. Pepe and Priyata Y. Patel of Paul Weiss Rifkind Wharton & Garrison LLP, Andrew E. Goldsmith, Jacob E. Hartman, Mary Charlotte Y. Carroll and Sven E. Henningson of Kellogg Hansen Todd Figel & Frederick PLLC and Steven R. Ruby, David R. Pogue and Raymond S. Franks II of Carey Douglas Kessler & Ruby. Celltrion is represented by Robert Cerwinski, Aviv Zalcenstein, Michael Cottler, Lora Green, David Kim, Brigid Morris, Kyle Musgrove, Cindy Chang and Michael W. Johnson of Gemini Law LLP, Matt Freimuth, Dan Constantinescu and Ocean Lu of Willkie Farr & Gallagher LLP and Michael B. Hissam, Max C. Gottlieb, Andrew C. Robey and Carl W. Shaffer of Hissam Forman Donovan Ritchie PLLC. The case is Regeneron Pharmaceuticals Inc. v. Celltrion Inc., case number 1:23-cv-00089, in the U.S. District Court for the Northern District of West Virginia.

Oct 21

2 min

Simpson Thacher recently represented The Cigna Group (NYSE: CI) (“Cigna”) in connection with its public offering of $4.5 billion in senior notes in four series of varying maturities. The Firm also represented Cigna in connection with its repurchase of approximately $1.76 billion of outstanding senior notes through tender offers concurrently with the notes offering.~~Separately, the Firm represented Cigna in connection with repurchases of approximately $3.2 billion of common stock through an accelerated share repurchase agreement.~~Cigna is a global health service company committed to creating a better future built on the vitality of every individual and every community. Cigna maintains sales capabilities in more than 30 countries and jurisdictions, and has approximately 165 million customer relationships around the world.~~The Simpson Thacher team included Joseph Kaufman, Adriana Estor-Restrepo and Neil Patel (Capital Markets); Jonathan Lindabury and Nathan Utterback (Derivatives); Abram Ellis and Laurel Fresquez (Sanctions/Anticorruption); Erica Rozow and Jeanne Annarumma (Executive Compensation and Employee Benefits); Jonathan Cantor and Emma Wang (Tax); and Steven DeLott (Insurance).

Dec 3

1 min

Simpson Thacher recently represented the underwriters in connection with Chubb INA Holdings Inc.’s registered public offering of $1 billion aggregate principal amount of 5% Senior Notes due 2034.~~Chubb intends to use the net proceeds from this offering for general corporate purposes, including the repayment at maturity of the $700 million of its outstanding 3.35% senior notes due 2024.~~Chubb is a world leader in insurance. With operations in 54 countries and territories, Chubb provides commercial and personal property and casualty insurance, personal accident and supplemental health insurance, reinsurance and life insurance to a diverse group of clients.~~The Simpson Thacher team included Joshua Bonnie, Mark Brod, Evan Hunt, Brice Stewart, Kelsey Henderson and Toyin Edogun (Capital Markets); Michael Mann (Tax); Rachelle Broida (Intellectual Property); Steven DeLott (Insurance); and Jennie Getsin (Blue Sky).

Aug 3

1 min

Law360 (November 11, 2025, 8:00 PM EST) · Listen to article Your browser does not support the audio element. -- The attorneys chosen as Law360's 2025 MVPs have distinguished themselves from their peers by securing significant achievements in high-stakes litigation, complex global matters and record-breaking deals. Competition for the MVP distinction was fierce this year, with editors reviewing nearly 900 submissions to determine the winners. Beginning this week, Law360 will profile its 2025 class of MVPs, which consists of 160 attorneys from 76 firms and 35 categories. Latham & Watkins topped the list this year, with MVPs in 12 categories. Sullivan & Cromwell was close behind with showings in eight areas, followed by Paul Weiss with MVPs in seven. Congratulations to this year's Law360 MVPs. Here's the full list of winners: Appellate Michael McGinley and Steven Engel • Dechert Allyson Ho • Gibson Dunn Deepak Gupta • Gupta Wessler Adam Unikowsky • Jenner & Block Kannon K. Shanmugam • Paul Weiss Jeffrey Wall • Sullivan & Cromwell Banking Adam Hakki • A&O Shearman Jennifer St. John Yount • Paul Hastings Jessica S. Carey • Paul Weiss Mitch Eitel • Sullivan & Cromwell Matthew M. Guest and Brandon C. Price • Wachtell Bankruptcy Jayme Goldstein • Paul Hastings James Bromley • Sullivan & Cromwell Ronit Berkovich • Weil Brett H. Miller • Willkie Benefits Jamie Fleckner • Goodwin David Della Rocca • Latham Brantley Webb • Mayer Brown Melissa Hill • Morgan Lewis Michael J. Schobel • Wachtell Paul Wessel • Weil Capital Markets Michael Kaplan • Davis Polk Andrew Fabens • Gibson Dunn Lewis Kneib • Latham Hui Lin • Simpson Thacher Michael Hong • Skadden Class Action Jeroen van Kwawegen • Bernstein Litowitz Steve W. Berman • Hagens Berman Joseph Saveri • Joseph Saveri Law Firm Michael P. Canty • Labaton Keller Angela Zambrano • Sidley Competition/Antitrust Benjamin D. Brown • Cohen Milstein Gary A. Bornstein • Cravath Fiona Schaeffer • Milbank Sara Y. Razi • Simpson Thacher Jeffrey Kessler • Winston & Strawn Complex Financial Instruments Ariel Goldman • Cahill Gordon John Timperio • Dechert Gilbert K.S. Liu • HSF Kramer Amanda Baker • Mayer Brown Asa "Geordie" Herald • Morgan Lewis Construction Lisa Glahn • Foley & Lardner Daniel "Dan" McMillan • Jones Day Scott Greer • King & Spalding Brandon Davis • Nossaman Jason Smith • Seyfarth Cybersecurity & Privacy Tiana Demas • Cooley Brenda R. Sharton • Dechert Paul Bond • Holland & Knight John Yanchunis • Morgan & Morgan Employment Christine E. Webber • Cohen Milstein Jennifer A. Riley • Duane Morris Jason Schwartz • Gibson Dunn Cameron W. Fox • Paul Hastings David E. Gottlieb • Wigdor Energy Dan Feldman • King & Spalding Justin Stolte • Latham Jenna McGrath • Milbank Joel Reese • Reese Marketos Geoffrey Harrison • Susman Godfrey Environmental David Chung • Crowell & Moring Shannon S. Broome • Hunton William J. Jackson • Kelley Drye Justin Savage • Sidley Fintech Ryan VanGrack • Coinbase Daniel P. Gibbons • Davis Polk Joshua Sterling • Milbank Brian Klein • Waymaker Fund Formation Andrew M. Ahern • Davis Polk Matthew B. Goldstein • Paul Weiss Chip Parsons • Proskauer Rony Rothken • Simpson Thacher Government Contracts Aron Beezley • Bradley Arant Carla Weiss • Nichols Law David Dixon • Pillsbury Adam Lasky • Seyfarth John R. Prairie • Mayer Brown Healthcare Michael Hess • Bass Berry Jason Mehta • Foley & Lardner Andrew Wirmani • Reese Marketos Adrianne Ortega • Ropes & Gray Insurance John Gibbons • Blank Rome Robin Cohen • Cohen Ziffer Cléa Liquard • Covington Joseph D. Jean • Pillsbury Intellectual Property John Desmarais • Desmarais Brian Rosenthal • Gibson Dunn Adam Alper and Michael De Vries • Kirkland Mike Morin • Latham Lucy Wheatley • McGuireWoods Daralyn Durie • Morrison Foerster International Arbitration David Pinsky • Covington Noiana Marigo • Freshfields Charles Claypoole • Latham Philippe Pinsolle • Quinn Emanuel International Trade Renee Latour • Clifford Chance David Fagan • Covington Les Carnegie • Latham Robert E. DeFrancesco III • Wiley Life Sciences Charity Williams • Cooley Mahvesh A. Qureshi • Hogan Lovells Abigail Gregor • Ropes & Gray Sally Wagner Partin • Sidley David M. Krinsky • Williams & Connolly Media & Entertainment Katherine Bolger • Davis Wright Moez Kaba • Hueston Hennigan David Yohai • Weil Mergers & Acquisitions Daniel J. Cerqueira • Cravath Brian Wolfe • Davis Polk Brad Faris • Latham Iliana Ongun • Milbank Jake Kling • Wachtell Private Equity David Allinson • Latham Angelo Bonvino • Paul Weiss Michael Suppappola • Proskauer Chau Le • Ropes & Gray Mark Myott • Simpson Thacher Product Liability Kim Branscome • Paul Weiss Brett Schreiber • Singleton Schreiber Arianna Scavetti • Weil Real Estate Christopher Dickson • Cadwalader Rachel S.K. Bates • Latham Whitney Salinas • Simpson Thacher Ralston Turbeville • Sullivan & Cromwell David Drewes • Willkie Securities Salvatore J. Graziano • Bernstein Litowitz Alfred L. Fatale III • Labaton Keller Jeff Hammel • Latham Audra Soloway • Paul Weiss Jeffrey Scott • Sullivan & Cromwell Sports & Betting Andrew Nightingale • Covington Matt Eisler • Hogan Lovells Bradley Ruskin • Proskauer Chuck Baker • Sidley Eric Feinstein • Wachtell Tax Maria Todorova • Eversheds Sutherland Adam Kool • Kirkland Pardis Zomorodi • Latham Isaac Wheeler • Sullivan & Cromwell Technology Joel Kurtzberg • Cahill Gordon Emily Henn • Covington Mike Ringler • Sullivan & Cromwell Telecommunications Matthew Brill • Latham Ravi Purohit • Paul Weiss Pantelis Michalopoulos • Steptoe Steven A. Cohen and Steven R. Green • Wachtell Thomas M. Johnson Jr. • Wiley Transportation Daniel O. Rose • Kreindler & Kreindler Mark W. Robertson • O'Melveny Raymond Atkins • Sidley Trials Jason Sheasby and Lisa Glasser • Irell Cory Hohnbaum • King & Spalding Pete Marketos and Josh Russ • Reese Marketos Felicia Ellsworth • WilmerHale Thomas "Tom" Melsheimer • Winston & Strawn White Collar Katherine Stoller • A&O Shearman Elliot Peters • Keker Jeff Knox • Simpson Thacher David Meister • Skadden Nicolas Bourtin • Sullivan & Cromwell Looking for a badge to celebrate your MVP recognition on your website or social media? Contact reprints@law360.com. Correction: A previous version of this story misidentified the firm of one of the Government Contracts MVPs. The error has been corrected. For a reprint of this article, please contact reprints@law360.com.

Nov 11

5 min

Simpson Thacher is representing DigitalBridge Group, Inc. (NYSE: DBRG) in connection with an initial $6.4 billion equity investment round in Vantage Data Centers, led by investment vehicles managed by DigitalBridge and Silver Lake. The investments are intended to accelerate and extend Vantage’s strategic capabilities to partner with global hyperscalers in meeting unprecedented cloud and AI demand. The capital raise was significantly oversubscribed and upsized by $2.8 billion upon the close with participation from multiple global investors, bringing the completed investment to $9.2 billion.~~Vantage Data Centers is a leading global provider of hyperscale data center campuses, developing and operating across five continents in North America, EMEA and Asia Pacific. Vantage powers, cools, protects and connects the technology of the world’s well-known hyperscalers, cloud providers and large enterprises.~~DigitalBridge is a leading global alternative asset manager dedicated to investing in digital infrastructure. With a heritage of over 25 years investing in and operating businesses across the digital ecosystem, including cell towers, data centers, fiber, small cells and edge infrastructure, the DigitalBridge team manages $75 billion of infrastructure assets on behalf of its limited partners and shareholders.~~The Simpson Thacher team includes Gabriel Silva, Shamus Crosby, Mark Kunzman, Gabriela Astolphi, Jonathan Schwartz, Lawrence Page and E.R. Rolwes (M&A); David Rubinsky and Megan Arrowsmith (Executive Compensation and Employee Benefits); Andrew Purcell, Brian Mendick and Emma Wang (Tax); and Steven DeLott (Insurance).

Sep 1

1 min