Markush Structure Patent Search

Use a Markush search to find patents that contain structures (including generic structures) matching the structure query.

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.

To conduct a Markush structure patent search:

  1. Click the Patents tile.


  2. Click the Chemical tab.


  3. Click Markush under Search for.

  4. Draw a new structure or import an existing file.

  5. Select whether to search the structure As Drawn or As a Substructure within a molecule.

  6. Click the Search button to view the results.

Learn More

Patent Searching in CAS Scientific Patent Explorer

Simple Patent Search

Chemical Structure Patent Search

Advanced Patent Search

Markush Results