Free Tool · §112 Support
Does your spec actually support your claim?
Under §112, a claimclaimA numbered sentence at the end of a patent that legally defines what the inventor owns. The most important section.Read more → is only as good as the description behind it — every term you claim must be described in the specificationspecificationThe main body of the patent — describes the invention in detail. Used to interpret the claims.Read more →, or it gets rejected for lack of written-description support. Paste your claim and spec and we'll flag any claim term that never shows up in the description.
Claim terms — green = found in spec, red = missing
5 claim terms (self-cleaning, solar, travelling-wave, repels, electrostatically) don't appear in your specification. Under §112, every claim term needs written-description support — add them to the spec, or you risk a lack-of-support or new-matter rejection.
This matches words, not legal meaning — an examiner asks whether the spec teaches the full concept, not just whether a word appears. Use it to catch obvious gaps, not as a §112 clearance. PatentBrief is not a law firm.
Why it matters
You can't claim what you didn't describe.
Section 112 requires the specificationspecificationThe main body of the patent — describes the invention in detail. Used to interpret the claims.Read more → to describe the invention in enough detail that a skilled person could make and use it — and to support every claimclaimA numbered sentence at the end of a patent that legally defines what the inventor owns. The most important section.Read more →. Add a term to a claim that isn't in the spec and you'll draw a written-description rejection; try to add it to the spec later and you'll hit the new-matter bar. The fix is to describe broadly and specifically up front, so the claimsclaimsThe numbered statements at the end of a patent that legally define what the inventor owns.Read more → always have a home in the text.