Derk Visser

The December issue 4|2019 of the journal epi Information contains four interesting contributions to the discussion on the novelty test for sub-ranges as used by the EPO. The EPO has a special novelty…

One of the key questions in the assessment of inventive step within the EPO is whether or not the skilled person will adapt or modify the teaching of the closest prior art and arrive at the invention…

The new Visser is out The 24th edition of the book The Annotated European Patent Convention by Derk Visser has been published on 6 December 2016. The book is updated till 15 November 2016. A few…

 The 23rd edition of the book The Annotated European Patent Convention has been published. The book is updated till 15 November 2015. Some important amendments in this new work: Recently issued…

The applicability of the obvious to try question has been a thorny issue in UK patent law for some time, and the desire for a party seeking invalidity to apply this test has pervaded many recent…

The fees of the EPO will shortly be increased by about 5%. The EPO compensates the fees for inflation each two years; the period of two years is a compromise between frequent compensation for…

The book ‘The Granting of European Patents’ by M. van Empel has recently been added to the (subscription) website kluwerpatentlaw.com. The book was published in 1975, was out of print within a few…

The new edition of the bestseller The Annotated European Patent Convention (Derk Visser, 2010) will be published on paper on 15 December 2010, but is already available for subscribers on www…

European patent practitioners are welcoming the news that the EPO Administrative Council reached a decision on 26 October 2010 to extend the period for responding to a communication under Rule 161…