Final answer:
The key difference is that the U.S. allows a one-year grace period after public disclosure for filing a patent, unlike most other countries.
Step-by-step explanation:
the united states allows a one-year grace period after a public disclosure:
The key difference between U.S. law and that of most other countries regarding patents on publicly disclosed innovations is that the United States allows a one-year grace period after a public disclosure. This means that an inventor can still file for a patent within one year of disclosing the invention to the public. In contrast, most other countries do not offer this grace period and require the invention to be novel and not publicly disclosed at the time of the patent application.
Patents incentivize innovation by granting the inventor exclusive rights to make, use, or sell the invention for a limited time, usually 20 years. However, patents are not always perfect. Issues such as the actual economic benefit to inventors, relevance in fast-moving industries, and overly broad patent grants can limit their effectiveness.