EU Wants To Redefine "Closed" As "Nearly Open"
Glyn Moody writes "A leaked copy (PDF) of Version 2 of the European Interoperability Framework replaces a requirement in Version 1 for carefully-defined open standards by one for a more general 'openness': 'the willingness of persons, organizations or other members of a community of interest to share knowledge and to stimulate debate within that community of interest.' It also defines an 'openness continuum' that includes 'non-documented, proprietary specifications, proprietary software and the reluctance or resistance to reuse solutions, i.e. the "not invented here" syndrome.' Looks like 'closed' is the new 'open' in the EU."
not sure how "open" PDF really is but its pretty universal
Wikipedia says "Formerly a proprietary format, PDF was officially released as an open standard on July 1, 2008, and published by the International Organization for Standardization as ISO/IEC 32000-1:2008". It also says Adobe has patents on it "but licenses them for royalty-free use in developing software complying with its PDF specification".
even if that wasn't the case there has long been a lot of fully compatible implementations of it (unlike Word).