Patent enforcement insurance costs about 1-3% of insured value per year, so a $2,000,000 enforcement policy might run between $20-60K/year.

For small companies with up to 3 patents, the cost can be down to $350/mo.

It isn’t free, but it is affordable.

Octane Fitness was a small company who was sued by a patent troll. Because they had insurance, they successfully went to the Supreme Court and back. And lived to be acquired by Nautilus Fitness Equipment.