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. |
37 C.F.R. app A to Subpart G of Part 1
Part 2 is placed in the separate grouping of parts pertaining to trademarks regulations.
Part 6 is placed in the separate grouping of parts pertaining to trademarks regulations.
Part 7 is placed in the separate grouping of parts pertaining to trademarks regulations.
Part 1 is placed in the separate grouping of parts pertaining to patents regulations.
Part 3 pertaining to both patents and trademarks is placed in the grouping pertaining to patents regulations.
Part 4 is placed in the separate grouping of parts pertaining to patents regulations.
Part 5 is placed in the separate grouping of parts pertaining to patents regulations.