Free Tool · Strength Grade
How strong is this patent?
A strength grade is different from a dollar value. It scores a patent across five independent axes — influence, breadth, foundation, longevity, and commercial signal — and rolls them into a single A+-to-F grade.
Or enter the signals manually
Patents that cite this one
Prior art this patent cites
Total claims
Until expiration (0–25)
Lawsuits involving it
FAQ
Frequently asked questions
What makes a patent strong?
Strength comes from several signals: how often later patents cite it, how broad its claimsclaimsThe numbered statements at the end of a patent that legally define what the inventor owns.Read more → are, the depth of its prior-art foundation, how much term remains, and commercial or litigationlitigationA lawsuit over patent infringement. Litigated patents often signal commercial importance.Read more → activity. This tool grades all five on an A–F scale.
Is a strong patent the same as a valuable one?
They're related but distinct. Strength measures legal and technical robustness; value estimates dollars. A robust patent in a tiny market can be worth less than a weaker one covering a huge market.
Where this fits · The patent process
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