Missouri
How Arnstein v. Porter applies in Missouri: state-specific rules, key cases, and bar exam notes for Copyright.
Missouri law reflects the principles established in Arnstein v. Porter, emphasizing the importance of originality and substantial similarities in copyright claims. The courts have similarly recognized the necessity of demonstrating both access to the work and substantial similarity to prove infringement.
In Missouri, a copyright claimant must demonstrate that the alleged infringer had access to the original work and that substantial similarities exist between the two works, consistent with the substantial similarity test.
The court held that the plaintiff must show both access to the copyrighted work and substantial similarity in expression to prevail in a copyright infringement claim.
The court ruled that merely copying ideas does not constitute copyright infringement, reinforcing that concrete expression must be substantially similar.
The court established that a finding of substantial similarity requires a careful analysis of the works in their entirety rather than isolated excerpts.
Missouri's approach aligns closely with federal copyright law regarding the necessity of proving access and substantial similarity. However, Missouri courts have sometimes emphasized a more nuanced evaluation of the context and purpose of the works in question, which may lead to different interpretations than federal courts.
Knowledge of the principles established in Arnstein v. Porter is crucial for the Missouri bar exam, especially regarding copyright infringement claims. Questions may involve assessing substantial similarity and access.