/ˈɑb.vi.əs/ – adjective
Definition: Dễ thấy, rõ ràng.
A more thorough explanation: 1. easy to see, understand or notice etc
2. used to describe something that is easy to notice or understand to a person skilled in the art of the relevant invention, and which does not involve an inventive step (and which is therefore unpatentable)
Example: 1. Some defects are hidden or do not become obvious until years after the home was built.
2. This could well be a patentable improvement as long as the difference was not obvious.