Mark Vanhegan KC

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Call: 1990
Silk: 2009

After reading Natural Sciences and Law at Trinity College Cambridge, Mark joined chambers in 1991. He was appointed Queen’s Counsel in 2009. For many years his practice has encompassed the full range of disputes relating to intellectual property rights, information technology and media law. He regularly appears in all the Courts in England and Wales and Europe relating to IP claims, including the Supreme Court/House of Lords, (in both patent and copyright proceedings) and the Court of Justice (in respect of trade mark rights), as well as in the Commercial Court, the TCC and ICC arbitrations.

The width of his practice is also reflected in the subject matter of the disputes. In the last two years alone Mark has acted in cases involving technology from a myriad of fields including oil and gas, formula one, quantitative trading (hedge funds), pharmaceuticals, mobile telecommunications, medical devices, satellite broadcasting and airline seating units. As a result of that experience Mark is frequently instructed in highly technical commercial disputes, particularly those involving confidential information, computer software and media rights. In addition he is regularly asked to act as a mediator, a role which he particularly enjoys, by being able to assist parties to achieve a positive outcome which is not necessarily available through the conventional litigation route.

Mark’s stellar reputation was echoed in his nomination for ‘IP/IT Silk of the Year’ at the 2016 Chambers & Partners Bar Awards.

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Recent & Notable Cases

easyGroup Limited v Nuclei Limited & or [2023] EWCA Civ 1247

This was an appeal from the decision of Bacon J in [2022] EWHC 901 (Ch) dismissing easyGroup’s claim for infringement of its mark EASYOFFICE under s.10(1) and (2) of the Trade Marks Act 1994 against Nuclei’s use (since 2...

Facebook Ireland Limited v Voxer IP LLC [2021] EWHC 1377 (Pat)

In Facebook’s first visit to the UK Patents Court, it sought revocation of a telecommunications messaging patent owned by Voxer.  The counterclaim raised infringement by the doctrine of equivalents, in response to which...

Neurim v Mylan [2020] EWHC 3270 (Pat)

The Claimants (“Neurim”) alleged infringement of EP(UK) 1,441,702 B1 (the “Patent”), which claims 2mg prolonged release pharmaceutical formulations including the active ingredient melatonin to improve the restorative qua...

Neurim v Generics UK Limited (t/a Mylan) [2020] EWCA Civ 793

This was an appeal from the decision of Marcus Smith J in [2020] EWHC 1362 (Pat) to refuse to grant an interim injunction to prevent Mylan launching a generic prolonged-release melatonin product. Neurim Pharmaceutical...

Neurim v Generics UK Limited (t/a Mylan) [2020] EWHC 1362 (Pat)

Neurim Pharmaceuticals (1991) Limited is the registered proprietor of EP(UK) 1,441,702 B1 (the Patent). Flynn Pharma Limited is registered as an exclusive licensee. The Patent claims prolonged release pharmaceutical form...

Philips v ASUSTEK, HTC et al [2019] EWCA Civ 2230

This was a set of three appeals from Judgments of Arnold J (as he was) concerning mobile telecommunications patents owned by Philips ([2018] EWHC 1224 (Pat), [2018] EWHC 1732 (Pat) and [2018] EWHC 1826 (Pat)).  Philips h...

Koninklijke Philips NV v Asustek Computer Incorporation & Ors [2018] EWHC 1826 (Pat)

Philips alleged infringement by HTC and ASUS of three Patents, which it had declared essential to the European Telecommunications Standards Institute (ETSI) Universal Mobile Telecommunications System (UMTS) standards, in...

Koninklijke Philips v Asustek and HTC [2018] EWHC 1732 (Pat)

Philips alleged infringement by HTC and ASUS of three Patents, which it had declared essential to the European Telecommunications Standards Institute (ETSI) Universal Mobile Telecommunications System (UMTS) standards, in...

Koninklijke Philips v Asustek and HTC [2018] EWHC 1224 (Pat)

Philips alleged infringement by HTC and ASUS of three Patents, which it had declared essential to the European Telecommunications Standards Institute (ETSI) Universal Mobile Telecommunications System (UMTS) standards, in...

W3 Ltd v Easygroup Ltd & Anor [2018] EWHC 7 (Ch)

This was a complex trade mark dispute, the core of which was whether W3 Ltd had infringed any valid EU trade mark of easyGroup Ltd by use of the sign “EasyRoommate” as the name of an online flat-sharing service.  The cas...

Generics (UK) Ltd v Yeda Research and Development Co [2017] EWHC 2629 (Pat)

  Generics (UK) Ltd v Yeda Research and Development Co[2017] EWHC 2629 (Pat): these patent proceedings concerned a dosage regimen for glatiramer acetate (“GA”) a treatment for Multiple Sclerosis, sold by Teva und...

Signature Realty Ltd v Fortis Developments Ltd [2016] EWHC 3583 (Ch)

The Claimant, Signature Realty, is a property development company which, in 2013, commissioned architects to draw up plans in order to apply for planning permission to develop two office buildings in Sheffield into stude...

Unwired Planet International Ltd v Huawei Technologies Co Ltd & Ors [2016] EWHC 94 (Pat) Trial B

This was the second technical trial in the mobile telecommunications patent case between Unwired Planet and Huawei & Samsung, concerning Unwired Planet’s patent portfolio, most of which it had obtained from Ericsson....

Jason Rawding -and- Seaga UK Limited [2015] EWCA Civ 113

This is a case about whether certain emails had been forged.  The appellant individual appealed against the trial judge’s finding that the appellant had provided a personal guarantee for the debts of a company of which h...

Weatherford Global Products v Hydropath Holdings Ltd & ors [2014] EWHC 2725 (TCC)

A breach of contract claim brought by Weatherford in respect of electronic fluid conditioners for use in the oil and gas industry against the supplier of the devices, Hydropath.  Weatherford alleged that the devices brea...

Collingwood Lighting Ltd v Aurora Ltd [2014] EWHC 228 (Pat)

Action for infringement of patent by the sale of fire-rated LED downlighters.  The judge held that the invention was simple but not obvious and that the defendant's products infringed.  The defendant's 'innocence defence...

Nestec SA & Ors v Dualit Ltd & Ors [2013] EWHC 923 (Pat)

In this action it was alleged by Nestec that supplying compatible coffee capsules for Nespresso machines infringed two patents covering machines which used them.  It was accepted by Nestec that the capsules were not nove...

Apple v Samsung

Mark is acting for Samsung in this patent dispute relating to mobile telephone technology. Trial listed for Autumn 2012.

Hollister v Medik Ostomy [2012] EWCA Civ 1419

Acted for the Claimants/Appellants before the Court of Appeal in considering whether the Court of Justice’s decision in Boehringer v  Swingward [2007] ETMR 1164 provided for a new Community wide rule to be applied when a...

PMS International Group Plc v Magmatic Limited [2016] UKSC 12

This is the first Community Registered Design case to reach the Supreme Court, and in it the Court has made a landmark decision as to the proper interpretation of Community Registered Designs. In this case, Magmatic, the...

Magmatic Ltd v PMS International Ltd [2014] EWCA Civ

The maker of the Trunki ride-on suitcase for children brought a claim against PMS for infringement of Community Registered Design, UK unregistered design right and copyright against the seller of the Kiddee Case, which i...

Bailey v Graham (AKA Levi Roots) [2012] EWCA Civ 1469

Claims to breach of confidence and contract relating to the creation and commercialisation of the famous “Reggae Reggae Sauce”. The Court of Appeal handed down their decision on 16th November 2012. Bailey v Graham (AK...

Jones v Ricoh Ltd [2012] EWHC 348 (Ch)

£28 million breach of confidence claim relating to contract dispute regarding commercial photocopier contracts. Jones v Ricoh Ltd  [2012] EWHC 348 (Ch)...

Tarbs Europe SA v Republic of Macedonia, Makedoneska Radio Televzija [2012] EWHC 1691 (Comm)

€80 million contractual and commercial fraud  dispute relating to the creation of a telecommunications centre in Macedonia and the international broadcasting of its state television programme between a Greek satellite te...

Ate My Heart Inc v Mind Candy [2011] EWHC 2741 (Ch)

Claim for trade mark infringement by the popstar Lady GaGa in relation to the children’s cartoon character Lady Goo Goo.

"Mark Vanhegan KC is a knowledgeable silk highlighted for his client care skills, his practical advice and the strength of his courtroom advocacy. He is known for his abilities in handling high-profile TMT patent disputes, and is also fully conversant in claims of design right and trade mark infringement. He has additionally developed a strong practice in the pharmaceutical industry."
Chambers and Partners 
"Mark is a top barrister. He is pragmatic, commercial and user-friendly. The reason I use him is that he is very skilful, and very good at cross-examination. He very quickly establishes his authority in the courtroom. He has a mastery of handling difficult witnesses. He is always in charge."
Chambers and Partners 
"Mark Vanhegan KC is one of the most clinical and crisp advocates I have ever worked with. Mark has a brain the size of a planet. He just knows how to present the case to the judges in a way that convinces them that he is the more sensible one." "Mark Vanhegan is a very effective and insightful advocate. He is great at presenting his case." "Mark is fantastic. He is superbly well prepared, very dedicated and hard-working in cases. His cross-examinations are amazing."
Chambers and Partners 
"He does superb cross-examination."
Chambers and Partners 
Mark is a class act. He is calm and thorough in court and he is often the difference between winning and losing a case.'
Legal 500
"A leader of choice for substantial IP litigation – a team player whose judicial gravity is a real asset in trial, and a highly effective advocate."
Legal 500