Benjamin de Blegiers

Partners at Weil, Gotshal & Manges and Latham & Watkins topped MergerLinks’ 2025 M&A rankings in a year of mega-deals in France, while the top two partners in the previous year’s ranking recently changed firms. Weil partner David Aknin sits atop the 2025 ranking, after leading on about €14.16 billion ($16.72 billion) across five deals, according to MergerLinks data. He’s closely followed by Latham & Watkins’ Gaetan Gianasso, who gained six spots from 2024 to come in at No. 2, leading on about €13.48 billion across six deals for 2025. MergerLinks said that in determining the rankings, it “considered transactions where the lawyer acted as the lead legal adviser to one of the transaction parties.” Deal value is calculated as the sum of the consideration paid by the acquirer for the equity stake in the target plus the value of the target’s net debt, where applicable. MergerLinks said this year’s rankings offer “a concrete view” of a “year marked by mega-deals and subdued overall volume.” Aknin, making his first appearance in the Top 10, in an interview described the 2025 market as “patchy,” with some very active “pockets” and others more “stop and go.” Sectors for which transactions remained very active and where investors were ready to pay premiums included animal and human health, food, particularly B2B ingredients companies, insurance, and wealth management, Aknin said. “There will be some big deals for these assets offering investors good visibility. In other areas, investors may prefer to wait.” In spring 2025, Aknin and his team advised French multinational animal health company Ceva Santé Animale in a €9.2 billion “recapitalisation” financing round bringing in new investors. Aknin called the transaction “one of the biggest buyout deals in Europe last year.” Leading on the bidder side of that deal, Gianasso and his Latham team advised PSP Investments, the Canadian public sector pension investment manager. Other firms advising on the bidder side included Dechert for Lyon-based PE firm Archimed, led by partner Alain Decombe, who made No. 3 in the 2025 ranking with €9.74 billion in two deals. Gianasso and Aknin and their teams also led buy-side advisers in French private equity firm Ardian’s $5.643 billion acquisition of a controlling stake in European corporate insurance brokerage Diot-Siaci. Latham advised the Ontario Teachers’ Pension Plan, while other sellers included Bpifrance and Cathay Capital, among others. “Sponsors’ appetite for transactions stayed resilient in 2025, despite a complex geopolitical environment and shifting political dynamics in France,” Gianasso said in an email. He described a year “marked by a clear flight to quality, with sponsors focusing on trophy assets across a broad range of sectors, particularly the most dynamic ones, such as software, healthcare, and business services.” Clifford Chance partner Laurent Schoenstein, who also worked on the Ceva deal, came in at No. 4 in the ranking, leading on around €8.63 billion in deal value, according to MergerLinks. Moves and Grooves The No. 3 in MergerLinks’ 2024 table, Clifford Chance’s Benjamin de Blegiers, doesn’t appear in this year’s ranking, but he led a four-lawyer, three-partner, energy and infrastructure PE team that left for Latham a few weeks ago. De Blegiers was global co-head of Clifford Chance’s infrastructure sector. No. 5 in this year’s ranking (for 2025), White & Case partner Franck De Vita, and his team led on $5.92 billion on two deals, according to MergerLinks. Meanwhile, former Freshfields partner Hervé Pisani, who was No. 4 in MergerLinks 2024 top 10, fell to No. 8 in the 2025 ranking, leading on about €5.16 billion in deal value while still at Freshfields. Pisani moved to White & Case in January. Bookending Pisani in this year’s ranking, Cleary Gottlieb Steen & Hamilton’s Charles Masson was No. 7. and Paul Hastings’ Sebastien Crepy was No. 9. No Kirkland This Year MergerLinks French top 10 advisers ranking for 2024 was topped by Olivier Assant of Bredin Prat, with Kirkland & Ellis partner Vincent Ponsonaille at No. 2. Neither of those two advisers made this year's top 10, although Bredin Prat managed to stay in the ranking with partner Benjamin Kanovitch coming in at No. 6 for 2025, leading on about €5.86 billion across two deals. Bredin was joined by another French firm, Scotto Partners, whose partner Adrien Badelon came in at No. 10.

Mar 1

3 min

The Federal Circuit has thrown out a jury's finding that lighting manufacturer Opti-Luxx owed $23,000 for infringing a Canadian competitor's two patents covering illuminated school bus signs. In a precedential decision Thursday, a three-judge panel of the appellate court reversed the lower court's judgment that Opti-Luxx infringed a utility patent, and it vacated the finding that it infringed a separate design patent. The Federal Circuit concluded that the design patent verdict was based on an incorrect claim construction of the word "transparency," so it vacated that part of the holding and remanded it for further proceedings under the correct construction. The panel said that "while the district court may consider extrinsic evidence, such as the testimony of an expert witness, any testimony that is 'at odds with … the written record of the patent,' should be afforded no weight." It also said that on remand, the lower court would have "to determine whether such an art-specific meaning of the term has been established such that the jury should be instructed as to such a meaning." "But in this respect, we caution that 'conclusory' testimony by experts unsupported by reliable extrinsic material — such as special-purpose dictionaries or other objective evidence — is insufficient," the panel said. As for the utility patent, the jury found infringement under the doctrine of equivalents, which allows for a finding of infringement even if patent claims aren't literally infringed. But the Federal Circuit reversed the judgment, saying no reasonable jury could have reached that conclusion. The utility patent requires that the sign can be customized without removing it, but Opti-Luxx's product can't do that, the appellate court said. "The patent indicates that the claimed invention can 'removably receive the sign' so that the signs can be exchanged, customized, or serviced without removing the entire installation," the panel said. "Smartrend's expert witness … conceded that the accused product is 'not capable of doing that.'" About two years ago, a jury in the U.S. District Court for the Western District of Michigan found that Opti-Luxx willfully infringed both patents, and awarded Smartrend Manufacturing Group $23,308 in damages. Smartrend first sued Opti-Luxx in November 2021 after notifying its competitor of the alleged infringement and its loss of customers. Smartrend said it alerted Opti-Luxx to the issue in February 2021, writing to the company to inform it of then-pending patent applications covering the illuminated signs. Gaëtan Gerville-Réache, an attorney for Opti-Luxx, said in a statement to Law360 on Thursday that he was happy with the appellate court's decision. "The Federal Circuit's opinion above all instructs district courts that they should not accept the conclusory opinions of experts simply because they are qualified experts, either at the claim construction phase or at trial," he said. "Expert opinions need to be closely examined to confirm they are based on actual evidence and do not contradict the patent or law, such as the test for the doctrine of equivalents." Counsel for Smartrend did not immediately respond to requests for comment Thursday. The patents-in-suit are U.S. Design Patent No. D932,930 and U.S. Patent No. 11,348,491. U.S. Circuit Judges Timothy B. Dyk, Richard Linn and Leonard P. Stark sat on the panel for the Federal Circuit. Smartrend is represented by Thomas W. Cunningham, John P. Rondini and Dustin R. Zak of Brooks Kushman PC. Opti-Luxx is represented by Gaëtan Gerville-Réache, Vito A. Ciaravino and Douglas A. Dozeman of Warner Norcross + Judd LLP. The case is Smartrend Manufacturing Group Inc. v. Opti-Luxx Inc., case number 24-1616, in the U.S. Court of Appeals for the Federal Circuit.

Nov 13

3 min

Latham & Watkins has hired a four-lawyer Clifford Chance PE team with energy and infrastructure expertise to enhance its Paris office, led by private equity and M&A partner Benjamin de Blegiers. De Blegiers is the former global co-head of Clifford Chance’s infrastructure sector. The other team members include finance partner Daniel Zerbib and public law and regulatory partner Gauthier Martin, who are also joining Latham as partners. Alexandre Namoun, a Clifford Chance counsel whose practice focuses on private equity and M&A, is the fourth member of the team and his position has yet to be determined. “Our Paris office lacked energy and infrastructure expertise, and that’s what this team now gives us,” a person close to the hires said. De Blegiers, who leaves Clifford Chance after four and a half years, spent close to three years at Weil, Gotshal & Manges, after an earlier 15-year stint at Clifford Chance Paris, including as partner, according to his LinkedIn profile. Martin spent 19 years at Clifford Chance, including nearly seven as a partner. Clifford Chance confirmed that de Blegiers, Zerbib and Martin are leaving but did not mention Namoun and did not immediately have any further comment. Latham said Blegiers advises corporates, private equity funds, pension funds, asset managers and other private capital investors, while Zerbib specializes in banking and finance transactions with a focus on infrastructure finance. Martin counsels clients on complex public contracts, regulated sectors and related strategic disputes. Latham’s approximately $7 billion in 2024 global revenues put it at No. 2 on the Global 200. Clifford Chance ranked No. 12, with just over $3 billion in gross revenues.

Feb 11

1 min