Which scenario falls under 102(b) for prior art considerations?

The scenario that falls under 102(b) for prior art considerations is public use in the U.S. more than one year before filing. Under 35 U.S.C. § 102(b), public use or sale of an invention in the United States more than one year before the effective filing date can be considered as prior art against a patent application. This means that if the invention was publicly used or sold for any reason before the one-year grace period leading up to the filing date, it can effectively bar the patentability of that invention.

The importance of the one-year timeframe is to establish a cutoff moment where any use or disclosure can potentially undermine the novelty of the patent claim being assessed. Such activities are considered to remove the novelty of the claimed invention if they occurred before the critical date of the patent application.

The other scenarios do not fit the criteria set forth by 102(b) in the same manner. For example, a publication anywhere in the world before filing might also invalidate the patent but is more broadly covered under 102(a) where any publication can be considered. Public knowledge in the U.S. at the time of filing may be interpretive of state of the art developments but does not specifically denote the timing aspect necessary for 102