Clarity

Question 1

T 165/84 Foam extrusion/CONDEC

Answer 1

The purpose of the clarity requirement is to ensure that the world knows what is being claimed (ie it is know what is prohibited and what is permitted).

Key term: Reason for clarity requirement

Question 2

T 409/10 Abrasive liquid slurry/EXTRUDE HONE

Answer 2

It needs to be clear until the grant of the patent and not just at the date of filing

Question 3

T 574/96 Deoxytetracyclines/AMERICAN CYANAMID

Answer 3

A claim does not lack clarity simply because it is too complex.

Question 4

T 238/88 Crown ether/KODAK [1992]

Answer 4

A claim does not lack clarity simply because it is too broad.

Question 5

T 226/98 Famotidine/RICHTER GEDON [2002]

Answer 5

Example: “Substantially pure” for use as a pharmaceutical product was unclear as no agreed definition.

Question 6

Bilgrey Samson’s App

Answer 6

Example: A dark and uninviting place” part of an amusement part not clear.