1. Not granted by patent.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• unextented,
• unparrented,
• unpaernted,
• unparenetd,
• unparanted,
• ynpatented,
• hnpatented,
• jnpatented,
• inpatented,
• 8npatented,
• 7npatented,
• ubpatented,
• unpattented,
• unpatentted,
• unpatanted,
• unpatonised,
• Unpretented,
• unatenuated,
• unpatted,
• unpratended

• unfeathered,
• unfattened,
• unabated,
• unbeaten,
• unpatronized,
• unpatronised,
• unpatterned.

The adjective form of the word "unpatented" is "unpatentable".

The plural form of "unpatented" is "unpatented".

The singular form of the word "unpatented" is "unpatent".