When you try to patent shit that's in the public domain.
Ex/ Craig Wright claimed that the US government endorsed his claim to the Bitcoin whitepaper after he submitted an application that 10 people submitted before him and Wei Liu after him.
A chronic plagiarizer who has made a career out of copying the work of others withoutpermission or citation, so much so that they wouldn't have a job without having done so. (Like Wheelwright, Wainwright, etc)