Legal Definitions - failure-to-disclose-best-mode rejection

Definition: A type of rejection in patent law where a patent application is rejected because the inventor did not disclose the best way to use the invention.

Example: If an inventor creates a new type of glue, but does not disclose the best way to use it, the patent application may be rejected for failure-to-disclose-best-mode. The examiner must find that the inventor deliberately concealed the information or that the description was so poorly written that it amounted to concealment.

This type of rejection is important because it ensures that the public has access to the best way to use the invention. Without this information, the invention may not be as useful or effective as it could be.