Seems like they are not alone when it comes to such 'gangsta' behavior--in biotchech, patent-based 'invitations' to 'licensing' produces a particular sad effect: it chills scientific innovation which could have saved lives. See
http://www.latimes.com/business/la-f...7499799.column
Do you think there should be a limit to such 'patent thuggery'? Or is it all about intellectual property--those who own it are entitled to the fruits of their labor (regardless of the 'gray area' these patents' shadows may cast)?