Sui generis
In sociology, the "sui generis" is what has been externalized, then internalized in the overall public and becomes a part of society that simply exists in its construct. It is not something that is not thought to have been created, because it is imbedded in everyone's way of thinking and being. Instances include the idea of love, or going to school, or clothing belonging to a specific gender. These examples are "sui generis" for they simply exist in society and are widely accepted without thoughts of where they come from or how they were created.
Glossary of patent law terms
A "sui generis" right notably available for medicinal and plant protection products. The right comes into force after the corresponding patent expires and, for medicinal and plant protection products, has a maximum term (i.e., lifetime) of 5 years.