JPEG 2000 has a number of patent claims against it, with some of the claimants having given limited patent licenses and some of the claimants still not even having said anything other than "You are violating our patent". As best I can tell it is not possible to get a list of the licenses or the patent claims without purchasing the JPEG 2000 specification and by so doing agreeing to the "click-wrap" licenses.
In the organization I used to work for, it was absolutely completely forbidden to agree to license terms without having had an opportunity to read the license terms. A lot of other organizations have similar principles .
Because of these legal issues it is difficult for people to assist with anything to do with JPEG 2000.
