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Mark Chacksfield

 


Year of call: 1999

Described in the directories as “a knowledgeable and deeply impressive adviser on the full spectrum of IP disputes” and “widely considered to be one of the rising stars of the IP Bar”, Mark practices in all areas of intellectual property law, with particularly strong expertise in major patent litigation. He has considerable experience in appearing as the sole advocate both at first instance and in the Court of Appeal, as well as in the EPO.

Mark has an outstanding reputation in the patents field, having acted in a number of high profile actions including the Generics (UK) v H. Lundbeck litigation in the House of Lords (escitalopram). Recent pharmaceutical and biotech cases include Resolution Chemicals v H. Lundbeck (escitalopram/res judicata), Teva v Merck (efayirenz/avia timet actions), Eli Lilly v HGS (Neutrokine-α), Regeneron Pharmaceuticals v Genentech (VEGF Trap-EYE®/Lucentis®), Ranbaxy v AstraZeneca (Swiss-form claims/esomeprazole), and Convatec v Smith & Nephew (Durafiber® wound care products). Mark has represented Nokia in the Interdigital, IPCom and HTC litigations, as well as working with a number of other high profile telecoms companies. He has also appeared in both high tech and mechanical patent actions, including appearing alone in the leading Court of Appeal case on indirect infringement of Grimme Landmaschinenfabrik GmbH & Co. KG v Derek Scott

Other areas of practice include media and entertainment, where Mark has represented broadcasters, record companies, picture libraries and well-known personalities in copyright and privacy claims, as well as having experience in musical copyright actions concerning substantial hits. His media clients include Northern & Shell, the Premier League Football Association, the Ian Fleming Estate, the BBC, ITV Network, Phonographic Performance, and various record companies and well known personalities.

Trade mark, passing off, copyright, design rights and complex copyright/breach of confidence actions (often involving commercial information such as client lists or technical software disputes), constitute other common areas of his practice. Mark also has experience in professional negligence cases concerning patent and IP professionals, the most recent being Kerr v Lawrence Shaw & Associates. In addition to litigation, Mark acts for clients in arbitration and mediation proceedings. Further, he is experienced in obtaining search and freezing orders, including those required in urgent 'John Doe' situations. Mark’s experience is reflected in a correspondingly wide range of clients from multinational corporations to individual inventors.

 

Recent Activity

» Teva UK Ltd & Anor v Leo Pharma A/s [2014] EWHC 3096 (Pat)
» Hospira v Genentech [2014] EWHC 1094 (Pat)
» D. Jacobsen & Sons v Crocs Inc [2014] EWHC 987 (Ch)
» Resolution Chemicals v H Lundbeck A/S [2013] EWCA Civ 924
» Resolution Chemicals v H. Lundbeck A/S [2013] EWHC 739 (Pat)
» Regeneron Pharmaceuticals Inc and Bayer Pharma AG v Genentech Inc [2013] EWCA Civ 93
» Regeneron & Bayer v Genentech [2012] EWHC 657
» MSD v. Teva [2012] EWHC 627 (Pat), [2012] FSR 24
» Nokia v IPCom [2012] EWHC 225
» Ranbaxy v Astra Zeneca
» Grimme Landmaschinenfabrik Gmbh & Co. KG v Derek Scott (T/A Scotts Potato Machinery) [2011] F.S.R. 7)

What the Directories Say

"Commercially sharp and user friendly"
Legal 500 (Intellectual Property) 2014

"Dynamic, easy to work with and completely on the ball."
Chambers Directory (Intellectual Property) 2014

Mark Chacksfield is "a phenomenal asset to his set." A barrister with a fine record on the most critical life sciences, pharmaceuticals and software patent cases, he is known for being "very creative and someone who sees all the angles in a case." In short, he is a "good strategic litigator."
Chambers Directory (Intellectual Property) 2013

" Mark Chacksfield is hailed by interviewees as "a strong addition to any team," and is widely considered to be one of the rising stars of the IP Bar. He is a knowledgeable and deeply impressive adviser on the full spectrum of IP disputes".
Chambers Directory (Intellectual Property) 2012.

Mark Chacksfield is quickly developing a reputation for being "dynamic, enthusiastic and hard-working", and a "creative lateral thinker". "He asks the right questions to drive things forward and has a great instinct for how a case should be played."
Chambers & Partners (Intellectual Property) 2011

"An exceptional advocate and thinker," he is someone "who'll look outside the box for other alternatives if the straightforward approach isn't working". Mark Chacksfield "will go far".
Chambers Directory (Intellectual Property) 2010.

 

  • What the Directories Say
  • "Commercially sharp and user friendly"
    Legal 500 (Intellectual Property) 2014

    "Dynamic, easy to work with and completely on the ball."
    Chambers Directory (Intellectual Property) 2014

    Mark Chacksfield is "a phenomenal asset to his set." A barrister with a fine record on the most critical life sciences, pharmaceuticals and software patent cases, he is known for being "very creative and someone who sees all the angles in a case." In short, he is a "good strategic litigator."
    Chambers Directory (Intellectual Property) 2013

    " Mark Chacksfield is hailed by interviewees as "a strong addition to any team," and is widely considered to be one of the rising stars of the IP Bar. He is a knowledgeable and deeply impressive adviser on the full spectrum of IP disputes".
    Chambers Directory (Intellectual Property) 2012.

    Mark Chacksfield is quickly developing a reputation for being "dynamic, enthusiastic and hard-working", and a "creative lateral thinker". "He asks the right questions to drive things forward and has a great instinct for how a case should be played."
    Chambers & Partners (Intellectual Property) 2011

    "An exceptional advocate and thinker," he is someone "who'll look outside the box for other alternatives if the straightforward approach isn't working". Mark Chacksfield "will go far".
    Chambers Directory (Intellectual Property) 2010.