A design patent is for a new and non-obvious ornamental design for an article of manufacture. This includes a design for an ornament, impression, print, or picture applied to or embodied in an article of manufacture. It further includes a design for the shape or configuration of an article of manufacture. However, a picture standing alone is not patentable.
A design patent has life span of 14 years from the date of issue.
No, provisional design patent application cannot be filed. Only the utility Patents are authorized by the patent office for filing provisional applications.