Stratasys is asking the US Copyright Office to deny a proposal that would make it legal to “jailbreak” 3D printers to allow the use of third party materials. The Digital Millennium Copyright Act, Section 1201, makes it a a felony to tamper with "an effective means of access control" for a given device. In the case of 3D printers, the access control in question relates to processes which check to see that the consumables used in a 3D printer have been made or approved by the manufacturer. Now a group called the Digital Right to Repair Coalition is taking Stratasys to task and saying the owners of 3D printers should have the right to modify or repair the machines they own without fear of prosecution. You can read the whole story here: http://3dprint.com/62247/stratasys-copyright-materials/