What format should supporting legal documentation be submitted as?

The correct format for submitting supporting legal documentation in a trademark application is a TIFF image. This format is specifically designed to maintain high-quality images that can accurately represent documents, which is crucial in legal contexts. TIFF images are typically preferred because they allow for detailed clarity, making it easier to review signatures and other intricate elements that are often present in legal documents.

PDF images, while somewhat acceptable in many cases, can sometimes have compatibility issues with specific software used by the USPTO for document review. Word documents and plain text files are generally not suitable, especially for scanned documents, because they may not preserve the original formatting or images that are essential for legal clarity. By using a TIFF format, applicants ensure that the documentation is presented in the best possible quality, facilitating the examination process.