This paper investigates the role of intellectual property rights (IPRs) in shaping the GSM industry. This industry is an example of a high-tech industry in which standards play a large role. In the process of designing the GSM standard, a lot of attention has been given to IPRs, mainly to avoid a situation in which a single IPR holder could hamper or even totally block the development of the standard. Nevertheless, the ultimate GSM standard contains a large amount of so-called ‘essential IPRs’, i.e., IPRs without which the implementation of GSM products is impossible. The paper starts with a general discussion of the development of GSM, and the role of firm strategy and IPRs in this process. Next, we present a database on the essential IPRs...