Why bare ideas are hard to protect
Copyright covers how something is expressed, such as a script, a drawing, or code, and generally not the idea underneath it. Patents can protect inventions, but an application has to meet demanding requirements, and an idea that has not been developed is usually not ready for that process. Trade secret law can protect confidential business information if reasonable steps were taken to keep it secret. Outside those regimes, New York courts have allowed some idea claims based on a contract or a confidential relationship, and how novel and concrete the idea must be can depend on the kind of claim. Courts often look hard at whether the concept was already circulating in the industry or was too general to belong to anyone.
The paper trail that matters
Idea cases usually depend on documents showing what was shared, with whom, and on what terms. Keep dated drafts, pitch decks, emails arranging the meeting, and any nondisclosure or submission agreement you signed or were asked to sign. Submission releases used by studios and companies often limit later claims, so their exact wording matters. Existing records of who attended a meeting are useful, though it is wise to talk with your lawyer before writing up a fresh account of events. If the other side was an employee or a business partner, employment and partnership agreements may decide who owns the work in the first place.
Civil claim, or something more
Most idea disputes are civil matters about contracts, confidentiality, or intellectual property. When the information was a genuine trade secret and was taken on purpose, federal law and some state laws, including a narrower New York provision, can also treat that as a crime, although prosecutors decide whether to pursue it. Before sending an accusation, check how your agreements handle disputes, since some require arbitration or set a particular forum. We usually start with what you disclosed, what protection was in place at the time, and how close the other product really is to yours.