nonproprietary

Short definition from Wiktionary

Adjective

1. 1
   Lacking proprietary value; not private or privileged information; not owned by anyone (not anyone's property, whether intellectual property or otherwise).
2. 2
   Lacking proprietary value; not private or privileged information; not owned by anyone (not anyone's property, whether intellectual property or otherwise): Not protected by trademark, patent, or trade secret and thus open to commercial use without license; said of drugs (medications) and of various kinds of goods and materials.

Noun

1. 1
   A drug that is not proprietary.