Use a Patent Markush search to find structures (including generic structures) matching your query within patent references.
For example:
The inventor need not have tested or prepared all members of the family, but can make a chemically plausible claim of equivalence via a Markush structure.
A Markush search differs from a substructure search in that it matches the structure query against generic structures found in patents. The result is a list of patent references.
Markush searches use the following structure presets:
- Element Count LIMITED:
- all atoms (Ring and Chain)
- A, Q, M, X, Ak, Cb, Cy and Hy variables
- Match Level Atom:
- all Ring atoms
- A, Q, M, X variables in Rings
- Cb, Cy and Hy variables
- Match Level Class:
- all Chain atoms
- A, Q, M, X variables in Chains
- Ak variables
- All chain nodes and bonds are Chain-only.
- All rings are Isolated.
Note: Shortcuts (such as Me, Et, etc.) are considered atoms, so the above atom presets will also apply to these.
To conduct a Patent Markush search, click the Patent Markush tile on the home page. Draw the query or upload a structure using a structure editor, and then click the OK button.
Click the magnifying glass to submit the query.
You may also perform a Markush search by selecting the Patent Markush search type within CAS Draw or clicking the Patent Markush button on a results page.
Results are displayed on the Patent Markush page.