GroundRules
37 CFR Appendix A to Subpart G of Part 1: Appendix A to Subpart G of Part 1—List of Nucleotides
Where this section sits in the code
- Title 37—Patents, Trademarks, and Copyrights
- CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE
- SUBCHAPTER A—GENERAL
- PART 1—RULES OF PRACTICE IN PATENT CASES
- Subpart G—Biotechnology Invention Disclosures
Source: World Intellectual Property Organization (WIPO) Handbook on Industrial Property Information and Documentation, Standard ST.25: Standard for the Presentation of Nucleotide and Amino Acid Sequence Listings in Patent Applications (2009).
Symbol Meaning Origin of designation
a a adenine.
g g guanine.
c c cytosine.
t t thymine.
u u uracil.
r g or a purine.
y t/u or c pyrimidine.
m a or c amino.
k g or t/u keto.
s g or c strong interactions 3H-bonds.
w a or t/u weak interactions 2H-bonds.
b g or c or t/u not a.
d a or g or t/u not c.
h a or c or t/u not g.
v a or g or c not t, not u.
n a or g or c or t/u, unknown, or other any.
Collected 2026-08-27T02:25:45Z. Source file · JSON