Antonyms are words that have opposite meanings, and for the phrase "patterning after," several antonyms can be used. One of the antonyms that can be used for this phrase is "breaking away from." This phrase means to go against or reject the established pattern, norm, or tradition. Another antonym that can be used for "patterning after" is "innovating," which means to introduce new ideas, methods, or products. Innovating stands in contrast to "patterning after," which implies replicating an established pattern. Other antonyms that could work for the phrase include "straying from," "departing from," and "differing from.