Nicolas van Zeebroeck

Issues in measuring the degree of technological specialisation with patent data

Nicolas Van Zeebroeck, Bruno Van Pottelsberghe, Wook Han

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...

Claiming more: the increased voluminosity of patent applications and its determinants.

Nicolas Van Zeebroeck, Bruno Van Pottelsberghe, Dominique Guellec

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...

When small is beautiful: measuring the evolution and consequences of the voluminosity of patent applications at the EPO

Eugenio Archontopoulos, Dominique Guellec, Niels Stevnsborg, Bruno Van Pottelsberghe, Nicolas Van Zeebroeck

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...

The puzzle of patent value indicators

Nicolas Van Zeebroeck

This paper reviews and analyses several issues in the measurement and interpretation of patent value indicators over a large database. Each of the five most classical indicators proposed in the...

A Brief History of Space and Time: the Scope-Year Index as a Patent Value Indicator Based on Families and Renewals

Bruno Van Pottelsberghe, Nicolas Van Zeebroeck

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...

Patents only live twice: a patent survival analysis in Europe

Nicolas Van Zeebroeck

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...

Patents and Academic Research: A State of the Art.

Nicolas Van Zeebroeck, Bruno Van Pottelsberghe, Dominique Guellec

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...

Filing strategies and patent value

Nicolas Van Zeebroeck, Bruno Van Pottelsberghe

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...

Long live patents: the increasing life expectancy of patent applications and its determinants

Nicolas Van Zeebroeck

Relying on a comprehensive dataset including detailed information on all patent applications filed to the EPO from 1980 to 2000 and on the renewal of those of them that were granted, this paper...

Développement et impact des stratégies de dépôt de brevets

Nicolas Van Zeebroeck

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...

Filing strategies and the increasing duration of patent applications

Nicolas Van Zeebroeck

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...

From patent renewals to applications survival: do portfolio management strategies play a role in patent length?

Nicolas Van Zeebroeck

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...