DRAWINGS (when necessary)
Drawings must be included with your application if the invention can be illustrated so that it is easier to understand the patent. They must be legible, labeled and referred to in the description.A patent application is required to contain drawings if drawings are necessary for the understanding of the subject matter sought to be patented. The drawings must show every feature of the invention as specified in the claims. Omission of drawings may cause an application to be considered incomplete.
If you need to create patent drawings use our Guide to Patent Drawings.
OATH OR DECLARATION, SIGNATURE
The oath or declaration is made on the following forms:- PTO/SB/01 without application data sheet
- PTO/SB/01A for combination with an application data sheet
- PTO/SB/02 for additional inventors
Providing a correspondence address will help to ensure prompt delivery of all notices, official letters, and other communications. In addition, a shortened declaration can be used when you also file an Application Data Sheet.
The oath or declaration must be signed by all of the actual inventors. An oath may be administered by any person within the United States, or by a diplomatic or consular officer of a foreign country, who is authorized by the United States to administer oaths. A declaration does not require any witness or person to administer or verify its signing. Thus, use of a declaration is preferable.
A full first and last name with middle initial or name, if any, of each inventor are required. The mailing address and citizenship of each inventor are also required if an application data sheet is not used.
SEQUENCE LISTING (when necessary)
If they apply to your invention, amino acid and nucleotide sequences must be included as they are considered part of the description. They should be in paper and computer-readable format.You must prepare this section, for the disclosure of a nucleotide and/or amino acid sequence, with a listing of the sequence that complies with the following patent rules: 1.821, 1.822, 1.823, 1.824, and 1.825, and may be in paper or electronic form.
Obtaining A Receipt For Mailed Patent Application Documents
A receipt for patent application documents mailed to the USPTO can be obtained by attaching a stamped, self-addressed postcard to the first page of the documents included in the patent application. However, the postcard has to include a long list of information.See - Obtaining a Receipt for Documents Mailed to USPTO

