What is the name of the treaty that allows American patents to be recognized and enforced in member countries

The Paris Convention for the protection of Industrial Property.

Explanation:

Paris Convention for the Protection of Industrial Property was signed in Paris, France, on 20 March 1883. It applied to industrial properties such as trademarks, industrial designs, patents, geographical indications, etc.

This international agreement was seen by name as the first notable step taken to enable creators ensure that all their intellectual works were duly protected in other nations.  

president thomas jefferson hoped that the embargo act of 1807 would the united states by demonstrating to britain and france their dependence on american goods, convincing them to respect american neutrality and stop impressing american seamen. instead, the act had a devastating effect on american trade.