Your Business First


"We must provide reliable support and advice to our clients and not just say what we think they want to hear."

Robbert-Jan de Lang studied chemistry in Utrecht, The Netherlands, and wrote his PhD thesis on a subject relating to organic synthesis. Before becoming a patent attorney with EP&C in 2004, he worked as a patent attorney at KeyGene NV, a biotechnology company. Robbert-Jan is experienced in the field of DNA technology and has worked on numerous cases relating to packaging, multilayer films for example, and its uses in the packaging and food industry. 

Robbert-Jan has been a member of the board of the Dutch Institute of Patent Attorneys since 2005, and President of Dutch Institute of Patent Attorneys since 2014. In his capacity as president, he also has a seat on the Committee van Acht (Patents). From this position, he is an advisor to the government on developments in the field of patent law. Robbert-Jan is also liaison with various professional patent associations in Europe. Robbert-Jan also regularly gives lectures and classes on a variety of IP-related topics.

He is a team player, persuasive, to the point and interested in a broad range of subjects. “Intellectual property is only one part of a business’s strategy which is something we always have to bear in mind. This is the reason why we like to work closely with our clients. If a client asks for a patent that is going to be of little use, it is my job as patent attorney to bring this to their attention and look for an alternative. We should be providing reliable support and advice and not just saying what we think they want to hear.” 


International Licensing platform: Fertile path for plant breeders - Robbert-Jan de Lang

Read all of Robbert-Jan's blog posts.

Scientific publications

De Lang RJ, Van Hooijdonk MJCM, Kramer H, Seinen W, Brandsma L. Transition metal catalysed cross-coupling between benzylic halides and aryl nucleophiles. Synthesis of some toxicologically interesting tetrachlorobenzyl toluenes.  Tetrahedron, 1998, 54, 2953-2966.

Synthetic Communications: An International Journal for Rapid Communication of Synthetic Organic Chemistry, 1532-2432, Volume 28, Issue 2, 1998, Pages 225 – 232

De Lang, Robbert-Jan. Transition-metal catalysed cross-coupling in organic synthesis. PhD thesis, Utrecht University, 1997.

Nedolya NA, De Lang RJ, Brandsma L, Trofimov BA. Reaction of Lithiated Methoxyallene and 2-Butyne with Isothiocyanates, Zh. Org. Khim, 1997, 87.

Brandsma L, Nedolya NA, Van der Kerk ACHTM, Heerema W, Lutz ETHG, De Lang RJ,. Afonin A V,  Trofimov BA. An unexpected Direction of Reaction of Lithiated 1,1-Dimenthylallene with Isopropyl Isothiocyanate, Inz. Akad. Nauk. Ser. Khim, 1997, 865.

Taherirastgar F, Nedolya NA, Brandsma L, De Lang RJ, Trofimov BA. The New Route of Synthesis of Quinolines by Reaction of Lithiated Acetylenes with Phenyl Isothiocyanate, Dokl. Akad, Nauk, 1997, 64

Brandsma L, Nedolya NA, Heerema W, Van der Kerk ACHTM., Lutz ETHG,  De Lang RJ,  Afonin A V,  Trofimov BA, The New Direction of Reaction of Lithiated 1,1-Dimenthylallene with Isothiocyanates: the Yield to Cyclobutanopyrrolines, Khim Geterosikl. Soedin, 1997, 572.

Nedolya NA, De Lang RJ, Brandsma L, B.A. Trofimov. A New Synthesis of Quinolines from Lithiated Allenes and Isothiocyanates, Izv. Akad. Nauk. Ser. Khim, 1996, 3024; Russ, Chem. Bull, 1996, 45, 2873.

De Lang RJ, Van Soolingen J, Verkruijsse HD and Brandsma L. An improved method for a versatile ligand. The synthesis of 1,1'-bis(diphenyl-phosphino)-ferrocene. Synthetic Communications, 1995, 25, 2989.

Van Soolingen J , De Lang RJ, Den Besten R,  Klusener PAA, Veldman N, Spek AL and  Brandsma L. A simple procedure for the preparation of 1,8-bis(diphenyl-phosphino)-naphtalene, Synthetic Communications, 1995, 25,1741.

Brandsma L, Van Doorn JA , De Lang RJ, Gusarova NK and Trofimov BA. Cleavage of

P-P bonds in phosporus. An efficient method for the preparation of primary alkylphosphines, Mendelev Communications, 1995, 14.