Chemical information in patents

Linda Clark

Derwent Information Ltd.

Patents - what and why?

Patent Volumes

Chemistry in Patents

(from a 3 week study in 1995)

Chemistry in Patents

Typical patent claim

Markush structures

Real Examples


Searching Markush structures

The Introduction of Graphics

Commercial Markush systems

Markush DARC


Current Graphical systems

A step forward, but not a complete solution?

Recent developments...

The future?

Useful questions