Law Commons^™

Reinvention, Sean B. Seymore

Vanderbilt Law School Faculty Publications

It is axiomatic that once an invention has been patented, it cannot be patented again. This aligns with the quid pro quo theory of patents — the public would receive nothing new in exchange for the second patent. Enforcing this rule is done through the novelty requirement, which bars a patent if the invention is already known. But the rule is hard to justify if the original patentee reneged on the quid pro quo by inadequately disclosing how to make and use the invention. The inadequate disclosure suggests that the original inventor did not invent anything and the public received …