Originally posted by DW
"They" are Fender and Gibson. If a headstock design is too close to theirs, they will take action against the builder. Their headstock shapes are trademarked. So are the logo script designs. You can look at a Sadowsky headstock and see that it's not a Fender. But they are fighting a constant battle against some others, and from what I've gathered, they have become a lot more aggressive lately. I know of one builder who has said on a public forum that Fender has warned him and he has taken down all the headstock photos of his Fender-style guitars on his site. He's waiting to see if Fender will allow him to use the headstock he's designed without having to defend himself against a lawsuit. They apparently told him that the headstock must be different enough that a person with no prior knowledge of guitars could look at it from a distance and tell an obvious difference. He also mentioned that he could be sued for back damages on prior sales.