New York
How Eli Lilly and Company v. Medtronic, Inc. applies in New York: state-specific rules, key cases, and bar exam notes for International Law.
New York courts, like the federal courts, apply patent law with a focus on the balance between encouraging innovation and protecting existing patent rights. The state recognizes the importance of patent rights in fostering business and technological advancement.
In New York, as derived from Eli Lilly v. Medtronic, the rule emphasizes the need for clear and convincing evidence when proving patent infringement, particularly concerning the definition of 'equivalence' and its relation to the doctrine of equivalents.
The court held that to prove infringement under the doctrine of equivalents, a patentee must show that the accused product performs substantially the same function in substantially the same way to obtain the same result.
The court ruled that certain amendments to a patent during prosecution could limit the scope of equivalency claims in infringement cases.
The court found that registration of copyright is a prerequisite for filing suit in infringement cases, further iterating standing requirements under patent law.
New York's approach to patent infringement largely aligns with the federal standard, as both emphasize the need for clear evidence of equivalency. However, state courts may not apply the same procedural rules or burdens of proof as set forth in federal law, potentially leading to different outcomes in similar cases.
Issues surrounding patent law and the doctrine of equivalents are relevant for both the New York bar exam and the patent law section of the multistate bar exam, particularly regarding proof requirements.