Credit Thievery

Intro
The "Credit Thievery" plot is when someone steals another person's credit for a work of theirs such as an invention or work of art. The one whose idea is stolen is put in a position where they can't do anything about their misfortune as other people likely won't believe them if they said that the idea was theirs and not the thief's, which causes the real creator of the idea to become helpless as more people enjoy their robbed creation. Near the end of the plot, the thief is either busted and has to confess to their robbery or they feel bad for the person they stole from and give the credit to them so people can recognize their creativity.

Plot Sample
One day when he was bored in his garage, Guy accidentally invents a kind of chair that helps people in town get over multiple types of body pains that suddenly struck the area. When Guy shares his new creation with Hugo, he comes up with the idea of showing it to Hugo's granddad who had an issue with his back for the past couple of weeks. When the old man relaxes in Guy's chair, he finds great relief from reclining in it and asks whose idea it was. Right as Guy is about to open his mouth, Hugo cuts him off and says that he build the chair all by himself using spare parts of other furniture. Hugo's granddad tells his grandson to share his amazing invention with the rest of the town, which Hugo promptly does. Later, Hugo finds a way to mass produce the chair and sell it to everyone in the town and its neighboring towns while Guy is left to sit and watch as his stolen idea earns his "friend" thousands. The next day, Guy figures that if he was able to come up with a great idea, then he could make another one that could be even more successful than the chair, so he returns to his garage and tries to outdo himself with an even better creation. As the days pass, Guy fails time and time again at making anything worth the public's attention, which causes him to fall into a Failure Depression. The downtrodden Guy eventually catches Hugo's attention, making him wonder if Guy's misery was his fault. Hours later, Hugo reveals to his customers that he wasn't the original creator of the new chair but that Guy was, much to Guy's joy and relief.