904.03(d) Electronic and Digital Media Specimens for Permitted Paper Filings
If submission on paper is permitted (see TMEP §301.01), the USPTO will accept specimens saved on conventional portable digital media carriers such as flash drives, compact discs (CDs), and digital video discs (DVDs).
Flash drives, compact discs, and DVDs must contain files in a file format designated as acceptable by the USPTO, such as .jpg, .pdf, .wav, .wmv, .wma, .mp3, .mpg, or .avi format. Cf. 37 C.F.R. §2.56(c).
Each digital media carrier should only contain specimens for one application; however, in a multiple-class application, the applicant may include more than one specimen on the same digital media carrier. If the nature of the specimen is unclear, the applicant should explain what it is and how it is used.
See TMEP §904.02(a) regarding electronically filed specimens, §904.03(f) regarding specimens for sound marks, and §904.03(l) regarding specimens for motion marks. See also 37 C.F.R. §2.56(d) and TMEP §904.02(b) regarding submission of permitted paper-filed specimens.