Links
[1] https://www.ifross.org/?q=en/artikel/twitter-introduces-innovators-patent-agreement-ipa
[2] https://www.ifross.org/?q=en/user/login&destination=comment/reply/1420%23comment-form
[3] mailto:cmaracke@sfc.keio.ac.jp
[4] https://www.ifross.org/?q=en/category/tags/twitter-ipa-softwarepatente