USPTO Compliance Starts with Black and White Drawings Patent drawings are more than illustrations—they are an essential part of your patent application. The USPTO generally requires black and white drawings to ensure clarity, consistency, and accurate reproduction. Professionally prepared drawings that meet official standards help avoid common filing errors, support faster examination, and present your invention in the clearest possible way to patent examiners. More Info: https://thepatentdrawing.com/black-and-white-patent-drawings-required/