The website of each EuMW publishes specific information on Visa Requests, depending on the specific organizing country.
Such information can be found in the Section devoted to Visitor Information. A valid passport may be required for entry into the organizing countries. Since these countries are all in the European Union, no visa is usually required for travelers with passports from a number of countries, like for instance: European Union, United States, Canada, Japan, South Korea, Australia or Singapore. Visa may possibly be required for travelers from other countries.
For more information on this, please have a look at www.eumweek.com. If you need a visa, you normally have to check with the Embassy of the organizing country in your own country, at least 3 to 4 months prior to the EuMW. There is most probably an associated web site where you can obtain the correct information.
The person in charge for the visa requests of the EuMW Paris, France is Mrs. Anne Marie GREGIS,
Dpt IEMN DHS
IEMN CNRS UMR 8520
Cité Scientifique
Avenue Poincaré - BP 60069
59652 VILLENEUVE D'ASCQ Cedex
FRANCE.