A person who holds a patent together with one or more other people, sharing the rights and responsibilities of the invention.
From 'co-' (together) + 'patentee' (one who holds a patent). 'Patent' comes from Latin 'patens' (open, evident), referring to official documents that open or reveal an invention to the public.
Most major inventions—from the light bulb to DNA structure discovery—involved copatentees, yet history often credits one person; patent databases actually reveal invisible collaborations that shaped modern technology.
Complete word intelligence in one call. Free tier — 50 lookups/day.