Law firms Making history: US elite lines up to advise on Pfizer takeover of Allergan Legal Business · 23 November 2015 · 2 min read Corporate and M&A US firms In what has been reported as the largest pharmaceutical deal in history, four of the biggest Wall Street players have advised on Viagra-owner Pfizer’s agreed $160bn takeover of Botox-maker Allergan.Your limit of 1 article in 30 days is up. Please login for full access or subscribe. Corporate users - click here for simple access (no password needed). For more information, please contact [email protected] Related ContentMore in this categoryHow CMS M&A partner David Roberts became the restaurant expert on both sides of the tableLaw firmsKate Peacock20 Apr 2026‘We’ve got the building blocks in place to grow’ – Harbottle closes in on £60mLaw firmsTom Cox17 Apr 2026Hogan Lovells and Cadwalader partners approve largest ever law firm mergerLaw firmsKate Peacock15 Apr 2026‘There’s a lot of money in Chicago’ – the city’s top lawyers on what’s driving business in the MidwestLaw firmsAlex Ryan13 Jan 2025Legal 500 US: Latham tops the charts in new US rankingsLegal 500 dataBarnaby Merrill28 Jun 2024Revolving Doors: Travers and Shearman exodus continues as US firms pick up the talentLaw firmsAlex Ryan16 Feb 2023Revolving doors: Simpson Thacher, Latham, Sidley lead New Year London movesLaw firmsAnna Huntley9 Jan 2025‘Seize every opportunity’ – Paul Hastings partner Reena Gogna on City law, Suits and poetryLaw firmsAnna Huntley7 Jan 2025Five partners vie to succeed Hoyland as Simmons managing partnerLaw firmsTom Cox7 Jan 2025