# Best mode

A requirement that, at filing, the inventor disclose the best way they knew to carry out the invention. Since the America Invents Act, failing to disclose the best mode can no longer be used to invalidate a patent in litigation, but it remains a filing requirement at the USPTO.

**Full entry:** https://patentbrief.org/glossary/best-mode

**All patent terms:** https://patentbrief.org/glossary

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_Source: PatentBrief — https://patentbrief.org. A plain-English glossary of US patent terms._