Abstract In this article, we reconceptualize, using an extended discrete and dynamic Ostrom's classification, the specific intellectual property (IP) regimes that support geographical indications (GIs) as ‘knowledge commons’, e.g. a set of shared collective knowledge resources constituting a complex ecosystem created and shared by a group of people that has remained subject to social dilemma. Geographical names are usually considered part of the public domain. However, under certain circumstances, geographical names have also been appropriated through trademark registration. Our analysis suggests that IP laws that support GIs first emerged in Europe and spread worldwide as a response to the threat of undue usurpation or private confiscation through trademark registration. We thus emphasize the nature of the tradeoffs faced when shifting GIs from the public domain to shared common property regimes, as defined by the EU legislation pertaining to GIs. In the context of trade globalization, we also compare the pros and cons of regulating GIs ex-ante rather than engaging in ex-post trademark litigation in the courts.