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	<title>Definition:Prior knowledge exclusion - Revision history</title>
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	<updated>2026-06-17T13:00:03Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<id>https://www.insurerbrain.com/w/index.php?title=Definition:Prior_knowledge_exclusion&amp;diff=13661&amp;oldid=prev</id>
		<title>PlumBot: Bot: Creating new article from JSON</title>
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		<summary type="html">&lt;p&gt;Bot: Creating new article from JSON&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;🚫 &amp;#039;&amp;#039;&amp;#039;Prior knowledge exclusion&amp;#039;&amp;#039;&amp;#039; is a policy provision — predominantly found in [[Definition:Claims-made policy | claims-made]] [[Definition:Liability insurance | liability]] coverages such as [[Definition:Professional liability insurance | professional liability]], [[Definition:Cyber insurance | cyber]], and [[Definition:Directors and officers liability insurance (D&amp;amp;O) | D&amp;amp;O]] insurance — that excludes coverage for [[Definition:Claim | claims]] arising from circumstances the [[Definition:Insured | insured]] knew about, or reasonably should have known about, before the policy&amp;#039;s inception date. The exclusion targets a specific form of [[Definition:Adverse selection | adverse selection]]: an applicant who is already aware of a potential claim or wrongful act purchasing a new policy in the hope that the resulting claim will be covered. Although the concept exists across global insurance markets, its exact formulation and the legal standards for what constitutes &amp;quot;knowledge&amp;quot; vary significantly between jurisdictions and even between policy forms within the same market.&lt;br /&gt;
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⚙️ The exclusion is typically triggered by questions on the [[Definition:Insurance application | insurance application]] asking whether the applicant is aware of any facts, circumstances, incidents, or potential claims that could give rise to a future claim under the policy being applied for. If the insured fails to disclose known circumstances and a claim later materializes, the insurer may invoke the prior knowledge exclusion to deny coverage — and, depending on the jurisdiction, may also pursue remedies for [[Definition:Misrepresentation | misrepresentation]] or [[Definition:Non-disclosure | non-disclosure]]. In the [[Definition:Lloyd&amp;#039;s of London | London market]] and under English law, the [[Definition:Insurance Act 2015 | Insurance Act 2015]] introduced a &amp;quot;proportionate remedy&amp;quot; framework for non-disclosure, which modifies the insurer&amp;#039;s available remedies depending on whether the non-disclosure was deliberate, reckless, or innocent. In the U.S., state laws and case law govern the interplay between the exclusion and the [[Definition:Duty of disclosure | duty of disclosure]], producing a patchwork of standards. Some policies employ an objective test (&amp;quot;knew or should have known&amp;quot;), while others use a subjective one (&amp;quot;actually knew&amp;quot;), and the choice profoundly affects how disputes are resolved.&lt;br /&gt;
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💡 For [[Definition:Underwriter | underwriters]], the prior knowledge exclusion is a first line of defense against moral hazard in claims-made portfolios, and its precise wording is among the most negotiated provisions in professional and management liability placements. [[Definition:Insurance broker | Brokers]] and [[Definition:Risk manager | risk managers]] counsel clients to review application questions carefully and to consider notifying their expiring insurer of any known circumstances under that policy&amp;#039;s [[Definition:Notice of circumstances | notice-of-circumstances]] provision before it expires, rather than carrying undisclosed exposure into a new policy period. Failure to navigate this process correctly can leave an insured in a coverage no-man&amp;#039;s-land — excluded by the new insurer under the prior knowledge exclusion and time-barred from recovery under the prior insurer&amp;#039;s policy. This interaction between the exclusion, the application process, and the [[Definition:Prior insurance clause | prior insurance clause]] makes the prior knowledge exclusion one of the most consequential provisions in claims-made insurance.&lt;br /&gt;
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&amp;#039;&amp;#039;&amp;#039;Related concepts:&amp;#039;&amp;#039;&amp;#039;&lt;br /&gt;
{{Div col|colwidth=20em}}&lt;br /&gt;
* [[Definition:Claims-made policy]]&lt;br /&gt;
* [[Definition:Prior insurance clause]]&lt;br /&gt;
* [[Definition:Notice of circumstances]]&lt;br /&gt;
* [[Definition:Duty of disclosure]]&lt;br /&gt;
* [[Definition:Adverse selection]]&lt;br /&gt;
* [[Definition:Insurance Act 2015]]&lt;br /&gt;
{{Div col end}}&lt;/div&gt;</summary>
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