Compare patents claim by claim, with the language from each one cited
Comparing patents means comparing claim elements, definitions and dates, and the differences that matter are often a single word in a claim or a variation in one embodiment. Upload the patents to one Search+ workspace and ask about one point at a time; each answer cites the passages from each patent so you read the competing language yourself.
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Last updated October 2026
How to compare patents with Search+
- Upload the patents to compare
Add each patent or published application, including older ones that only exist as scans. Keep one workspace per comparison, for example your patent and the documents you are comparing it with.
- Set the comparison frame
In Workspace Context, write what you are comparing, such as "Compare independent claims element by element; quote claim numbers; note differences in defined terms". It applies to every question.
- Compare one element at a time
Ask how each patent claims or describes a single element. Open the citations from each patent before drawing any conclusion, because claim wording is exact.
Patent comparison questions
For the element "a controller configured to", how is it worded in each patent's independent claims?
Which patent's claim 1 includes fewer required elements?
Do both patents describe a wireless version of the device in their embodiments?
What priority dates does each patent claim?
Does either patent cite the other, or the same earlier documents?
Do the patents define the term "substrate" differently?
What matters when comparing patents
Patents are compared by breaking claims into elements and checking each one, since a single missing or different element changes the comparison.
A word defined in one patent's description can mean something narrower or broader than the same word in another. Check definitions before comparing claims.
Priority and filing dates determine which patent can count as prior art for the other. Compare dates before comparing content.
The description shows ways to carry out the invention; the claims set the scope. Similar embodiments do not mean similar claims.
Ask across every patent in the workspace or narrow to one, and the answer cites the passages it used from each.
Comparison points for patents
| Comparison point | Why it matters | A question to ask Search+ |
|---|---|---|
| Independent claims | They define the broadest protection | How do the independent claims of each patent differ? |
| Dependent claims | They show fallback positions | Which narrower features does each patent claim? |
| Defined terms | They control claim meaning | How does each patent define its key terms? |
| Priority dates | They decide what is prior art to what | Which patent has the earlier priority date? |
| Embodiments | They show what each inventor described | Which embodiments appear in one patent but not the other? |
| Cited references | They show the art each was examined against | Which references are cited by both patents? |
What is a patent comparison in Search+?
A patent comparison in Search+ is a chat answer that sets out how two or more patents in your workspace differ on the claim element, definition, date or embodiment you asked about, with citations to the passages in each patent.
Questions about comparing patents
Can Search+ build a claim comparison?
Can it tell whether one patent anticipates another?
Will it spot a difference in a single claim word?
Can it compare a patent family's publications?
Can I include an older patent that exists only as an image?
Can a comparison answer leave something out?
Line up the claims and read the difference
Start a workspace, upload the patents, and compare them one claim element at a time.
Start a workspace