This paper analyses several issues that arise when measuring technological specialisation with patent data. Three starting choices are required regarding the data source, the statistical measure and the sectoral aggregation level. We show that the measure is highly sensitive to the data source...

It has long been implicitly assumed that the roaring backlogs experienced by most patent offices around the world – and harshly criticized by many patentees – are a mere mechanical consequence of surging numbers of patent filings. However, different voices suggest that the patent system may...

The sharp increase in academic patenting over the past 20 years raises important issues regarding the generation and diffusion of academic knowledge. Three key questions may be raised in this respect: What is behind the surge in academic patenting? Does patenting affect the quality and quantity...

The length of patent rights is an issue of considerable importance in the design of patent systems, and its optimality has been intensively discussed in the literature. This dimension – taking the form of the number of years during which a given patent has been maintained – has been...

The joint increase in the number and size of patents filed around the world puts patent systems under pressure.This paper addresses issues in measuring the voluminosity of patent applications and highlights patterns in its evolution. The results – based on a 2 million EPO applications database...

The joint increase in the number and size of patents filed around the world puts the patent system under pressure. This paper analyses the sources of this surge in number of claims and pages of patent applications at the EPO. Four hypotheses are scrutinized: the diffusion of national drafting...

The renewal of patents and their geographical scope for protection constitute two essential dimensions in a patent’s life, and probably the most frequently used patent value indicators. The intertwining of these dimensions (the geographical scope of protection may vary over time) makes their...

This paper aims at contributing to the literature on the determinants of patent value. First, it puts forward a new potential class of value determinants in the form of filing strategies (encompassing filing routes and drafting styles). Second, it provides empirical evidence suggesting that...

Cet article propose une analyse de l’évolution et des déterminants des stratégies de dépôt de brevets et leur impact sur les systèmes de brevets. La motivation de cette recherche réside dans l’évolution des pratiques (rédaction et dépôt des demandes) au cours des 20 dernières...

The decision of firms to renew their patents is largely assumed to be the result of a careful valuation exercise to balance their expected revenues with renewal fees. This article extends this line of reasoning to all patent applications filed to the EPO over a 20 years period and analyzes with...