W3C Royalty-Free Licensing Requirements

Requirements for a license, (not license text itself):

  1. available to all
  2. all Essential Claims 'owned or controlled'
  3. field of use limitation
  4. reciprocity
  5. no fees
  6. defensive suspension
  7. no other conditions
  8. implementer may refuse
  9. license for life of Recommendation
  10. Recommendation deprecation
  11. Interim license