Meaning : An unincorporated business owned by a single person who is responsible for its liabilities and entitled to its profits.
Synonyms : proprietorship
Meaning : Protected by trademark or patent or copyright. Made or produced or distributed by one having exclusive rights.
Example :
`Tylenol' is a proprietary drug of which `acetaminophen' is the generic form.
Not protected by trademark or patent or copyright.
Nonproprietary products are in the public domain and anyone can produce or distribute them.