[Code of Federal Regulations]
[Title 37, Volume 1]
[Revised as of July 1, 2008]
From the U.S. Government Printing Office via GPO Access
[CITE: 37CFR1.58]

[Page 58-59]
 
              TITLE 37--PATENTS, TRADEMARKS, AND COPYRIGHTS
 
  CHAPTER I--UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF 
                                COMMERCE
 
PART 1_RULES OF PRACTICE IN PATENT CASES--Table of Contents
 
                Subpart B_National Processing Provisions
 
Sec. 1.58  Chemical and mathematical formulae and tables.

    (a) The specification, including the claims, may contain chemical 
and mathematical formulae, but shall not contain drawings or flow 
diagrams. The description portion of the specification may contain 
tables, but the same tables may only be included in both the drawings 
and description portion of the specification if the application was 
filed under 35 U.S.C. 371. Claims may contain tables either if necessary 
to conform to 35 U.S.C. 112 or if otherwise found to be desirable.
    (b) Tables that are submitted in electronic form (Sec. Sec. 1.96(c) 
and 1.821(c)) must maintain the spatial relationships (e.g., alignment 
of columns and rows) of the table elements when displayed so as to 
visually preserve the relational information they convey. Chemical and 
mathematical formulae must be encoded to maintain the proper positioning 
of their characters when displayed in order to preserve their intended 
meaning.
    (c) Chemical and mathematical formulae and tables must be presented 
in compliance with Sec. 1.52(a) and (b), except that chemical and 
mathematical formulae or tables may be placed in a landscape orientation 
if they cannot be presented satisfactorily in a portrait orientation. 
Typewritten characters used in such formulae and tables must be chosen 
from a block (nonscript) type font or lettering style having capital 
letters which should be at least 0.422 cm. (0.166 inch) high (e.g., 
preferably Arial, Times Roman, or Courier with a font size of 12), but 
may be no smaller than 0.21 cm. (0.08 inch) high (e.g., a

[[Page 59]]

font size of 6). A space at least 0.64 cm. (1/4 inch) high should be 
provided between complex formulae and tables and the text. Tables should 
have the lines and columns of data closely spaced to conserve space, 
consistent with a high degree of legibility.

[69 FR 56540, Sept. 21, 2004]