Koon v. Insurance Company was a United States Supreme Court case that addressed the issue of whether an insurance company was liable for damages caused by a fire that occurred on the insured's property. The insured, Koon, had purchased a fire insurance policy from the defendant insurance company. The policy provided coverage for any damage caused by fire to the insured's property. Koon's property was damaged by a fire that occurred on the premises. Koon filed a claim with the insurance company for the damages caused by the fire. The insurance company denied the claim, arguing that the fire was caused by Koon's negligence and that the policy did not cover damages caused by the insured's negligence. The Supreme Court held that the insurance company was liable for the damages caused by the fire. The Court reasoned that the policy did not exclude coverage for damages caused by the insured's negligence, and that the insurance company was therefore liable for the damages caused by the fire. The Court also held that the insurance company was not entitled to a defense against the claim, as the policy did not provide for such a defense.

Justice Field delivered the dissenting opinion in Koon v. Insurance Company, arguing that the majority's decision was a misinterpretation of the contract between Koon and his insurance company. He argued that while it is true that an insurer must pay for losses caused by fire, this does not mean they are liable to cover all damages resulting from such fires. In this case, he argued, there were two distinct causes of damage: one being a fire which occurred before the policy was issued and another being a second fire which occurred after its issuance but due to negligence on behalf of Koon himself. The first cause should be covered by the policy as agreed upon; however, Justice Field believed that any damages resulting from negligent behavior should not be included in coverage since it would go against public policy and encourage people to act recklessly with their property without fear of consequence or financial loss. Therefore, he concluded that only those losses directly related to the initial fire should have been compensated under this particular insurance agreement.