~에 '대'한: 대對 means -in short - "to face". "to target", or "to objectify" And yes, it is passable when you want to say <about>. But not all the time. 관하여 would be a better fit if you want more all-around preposition that means "about" ("관" means "in relation to" ) So! Other than definition#1 "about", 대하여 can mean 1) facing, 2)targeting 3)taking as object 발명품에 대한 권리 Right to (your) inventions (Right targeting inventions) 발명품에 관한 권리 sounds similar. But tiny difference in nuance. 발명품에 관한 권리 - I'd translate it to <Right pertaining to invention> It doesn't necessarily mean your right(say, a copyright) that you have to your inventions. It could mean any right so long as it pertains to(관=in relation to) the invention of discussion. It can even include the rights of the people who use the invention under license contract, for example a license holder's right) Just saying. Bye