Last week we had a meeting about building a set of Public Domain Calculators for countries across Europe (which we blogged about earlier this month). The public domain calculators will help to determine whether or not a given work is in copyright in a given jurisdiction.

We started out by reviewing existing work on the calculators. We then put together first drafts of diagrams representing copyright law in the Netherlands and the United Kingdom. We also started work on a tutorial to help others getting started in building public domain flow diagrams for other countries. Finally we shot some footage for a micro-short film introducing the project – so watch this space!

Documentation for the event is now available, including:

If you are interested in contributing to a calculator for your country – please contact us directly or join our pd-discuss list and introduce yourself!

The Public Domain Calculators meeting was organised by the Open Knowledge Foundation and the Centre for Intellectual Property and Information Law at the University of Cambridge as part of Communia, the European policy network on the digital public domain.

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Dr. Jonathan Gray is Lecturer in Critical Infrastructure Studies at the Department of Digital Humanities, King’s College London, where he is currently writing a book on data worlds. He is also Cofounder of the Public Data Lab; and Research Associate at the Digital Methods Initiative (University of Amsterdam) and the médialab (Sciences Po, Paris). More about his work can be found at and he tweets at @jwyg.