Marleen van den Horst

T: +31 70 376 06 21
E: marleen.vandenhorst@barentskrans.nl
View Marleen van den Horst on LinkedIn

Marleen van den Horst, head of the IP and Technology practice group, has ample experience in conducting complex, cross-border proceedings on intellectual property. Specialised in patent law, she handles cases involving mechanical engineering, electrical engineering, chemistry and life sciences. These deal with topics ranging from hatch covers, electronic braille cells, sports field maintenance machines and flower bulb sorting machines to medical equipment and medicinal products. Marleen has achieved international recognition in the field of life sciences. She handles patent and administrative proceedings on medicinal products with the active ingredients ciclosporine, omeprazole, alendronate, fluvastatine, lansoprazole, escitalopram, valsartan, esomeprazole, modafinil and monoclonal antibodies. Aside from litigation, Marleen also assists clients in negotiating and drawing up licences, technology transfers and distribution and cooperation agreements.

Selected directory listings

“She pushes forward energetically and is always ready to pursue unconventional approaches if they look promising.” – IAM Patent 1000, 2020

Practice head Marleen Van Den Horst has a well-established expertise in generic pharmaceuticals and is a ‘highly skilled litigator’ with ‘creative and commercially sound suggestions’Legal 500, 2020

Marleen Van den Horst is praised by clients for maintaining a “really good oversight” of cases. Her practice centres on contentious patent cases, where she frequently represents multinational pharmaceutical clients. – Chambers Global & Europe 2020

Marleen Van Den Horst heads the practice at BarentsKrans which has ‘respected lawyers with a broad network’ and who ‘go into depth in understanding technology and provide a strategy‘. Van den Horst has decades of experience in relation to litigation over blockbuster drugs and regulatory proceedings. – Legal 500, 2019

According to sources, Marleen van den Horst is ”a very good lawyer with excellent judicial skills.”Chambers Global 2019

Professional activities

Member of the Board of the NeoKidney Foundation
Member of various professional associations, including EPLAW, AIPPI, LES, HollandBio, VF&R
Member of Vereniging Intellectuele Eigendom Proces Advocaten (VIEPA)

News and publications

Pharma update | NPS’s cinacalcet patent held valid by Court of Appeal

EP ‘761, owned by Shire-NPS Pharmaceuticals Inc. (‘NPS’), relates to the API cinacalcet, which is used for the treatment of conditions of impaired regulation of calcium levels in human blood and tissue fluid. The product is marketed under the name Mimpara®. In September 2017, Accord Healthcare Ltd. and Accord Healthcare B.V. (‘Accord’) initiated invalidity proceedings
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Telecoms update | District court imposes confidentiality regime in patent infringement proceedings

On 13 May 2020, the District Court of The Hague (“the Court”) rendered a judgment in final relief proceedings between DTS and Samsung regarding the alleged infringement of two of DTS’ European patents. Samsung’s non-infringement defence dealt with security aspects of its mobile devices. Given the sensitive nature of these security aspects, Samsung requested the
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