Building a Defensive Patent Portfolio

A defensive patent portfolio is not about suing competitors, it is about making sure they cannot sue you. It is the legal equivalent of mutual assured destruction.

The logic is simple: if a rival threatens litigation, your own patents give you something to counter with, turning a one-sided fight into a negotiation.

How a defensive portfolio works

• Patents in your core technology area
• Assets that competitors may need for their products
• Cross-licensing leverage in negotiations
• Protection against patent trolls

How to build one

• File around your own core innovations first
• Watch competitor filings and cover the gaps
• Join patent pools or defensive networks where useful
• Keep a few strong patents rather than many weak ones

A handful of well-chosen patents in the right hands deters more litigation than a large portfolio of junk, quality beats quantity.

When defense pays off

Even a small defensive portfolio changes the negotiation, because a credible counterclaim makes litigation unattractive.

• Keep a few strong patents
• Watch competitor filings
• Be ready to cross-license