Sherrall, 

An Occurrence policy protects you from any covered incident that occur during the policy period, regardless of when a claim is filed. An occurrence policy will respond to claims that come in – even after the policy has been canceled – as long as the incident occurred during the policy period.

 Claims-made policies provide coverage for claims only when BOTH the incident AND the resulting claim happen during the policy  period.  Claims-made policies provide coverage so long as the insured continues to pay premiums for the initial policy and any subsequent renewals. Each succeeding year the policy is continuously renewed, the “coverage period” is extended. Once premiums stop the coverage stops. Claims made to the insurance company after the coverage period ends will not be covered, even if the alleged incident occurred while the policy was in force.

 I hope this helps.

Jan