[Code of Federal Regulations]
[Title 37, Volume 1]
[Revised as of July 1, 1999]
From the U.S. Government Printing Office via GPO Access
[CITE: 37CFR1.56]

[Page 39-40]
 
             TITLE 37--PATENTS, TRADEMARKS, AND COPYRIGHTS
 
    CHAPTER I--PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE
 
PART 1--RULES OF PRACTICE IN PATENT CASES--Table of Contents
 
                Subpart B--National Processing Provisions
 
Sec. 1.56  Duty to disclose information material to patentability.

    (a) A patent by its very nature is affected with a public interest. 
The public interest is best served, and the most effective patent 
examination occurs when, at the time an application is being examined, 
the Office is aware of and evaluates the teachings of all information 
material to patentability. Each individual associated with the filing 
and prosecution of a patent application has a duty of candor and good 
faith in dealing with the Office, which includes a duty to disclose to 
the Office

[[Page 40]]

all information known to that individual to be material to patentability 
as defined in this section. The duty to disclose information exists with 
respect to each pending claim until the claim is cancelled or withdrawn 
from consideration, or the application becomes abandoned. Information 
material to the patentability of a claim that is cancelled or withdrawn 
from consideration need not be submitted if the information is not 
material to the patentability of any claim remaining under consideration 
in the application. There is no duty to submit information which is not 
material to the patentability of any existing claim. The duty to 
disclose all information known to be material to patentability is deemed 
to be satisfied if all information known to be material to patentability 
of any claim issued in a patent was cited by the Office or submitted to 
the Office in the manner prescribed by Secs. 1.97(b)-(d) and 1.98. 
However, no patent will be granted on an application in connection with 
which fraud on the Office was practiced or attempted or the duty of 
disclosure was violated through bad faith or intentional misconduct. The 
Office encourages applicants to carefully examine:
    (1) Prior art cited in search reports of a foreign patent office in 
a counterpart application, and
    (2) The closest information over which individuals associated with 
the filing or prosecution of a patent application believe any pending 
claim patentably defines, to make sure that any material information 
contained therein is disclosed to the Office.
    (b) Under this section, information is material to patentability 
when it is not cumulative to information already of record or being made 
of record in the application, and
    (1) It establishes, by itself or in combination with other 
information, a prima facie case of unpatentability of a claim; or
    (2) It refutes, or is inconsistent with, a position the applicant 
takes in:
    (i) Opposing an argument of unpatentability relied on by the Office, 
or
    (ii) Asserting an argument of patentability.

A prima facie case of unpatentability is established when the 
information compels a conclusion that a claim is unpatentable under the 
preponderance of evidence, burden-of-proof standard, giving each term in 
the claim its broadest reasonable construction consistent with the 
specification, and before any consideration is given to evidence which 
may be submitted in an attempt to establish a contrary conclusion of 
patentability.
    (c) Individuals associated with the filing or prosecution of a 
patent application within the meaning of this section are:
    (1) Each inventor named in the application;
    (2) Each attorney or agent who prepares or prosecutes the 
application; and
    (3) Every other person who is substantively involved in the 
preparation or prosecution of the application and who is associated with 
the inventor, with the assignee or with anyone to whom there is an 
obligation to assign the application.
    (d) Individuals other than the attorney, agent or inventor may 
comply with this section by disclosing information to the attorney, 
agent, or inventor.

[57 FR 2034, Jan. 17, 1992]