IP Quick Tip: The Inescapable Trap At The EPO (Podcast)

In 1994, with its landmark decision G 1/93. the EPO's Enlarged Board of Appeal gave birth to the principle of the "inescapable trap": If an application is amended during prosecution with a limitation that is, post-grant, found to be not originally disclosed, and the limitation cannot be replaced without violating the prohibition of post-grant extension of protection, the patent must be revoked. Now, almost 20 years later, patents still regularly die due to this principle, with their innovative value not taken into account at all.

What can you do during prosecution to avoid that your future patents will fall into this trap?

Combine multiple dependent claims only if these are dependent upon each other. For example, when limiting your claim 1 during prosecution with the features of claims 2 and 3, without claims 2 and 3 being dependent upon each other, such an amendment may put your granted patent at high risk. Thus, be mindful of the dependencies when combining