Specialized knowledge means special knowledge of the company's product or its application in international markets, or an advanced level of knowledge of the company's processes and procedures. General professional skill alone is not enough, but the knowledge need not be proprietary, unique or unavailable across the industry or workforce.
The knowledge must belong to the company before it belongs to the person
The statutory definition concerns special knowledge of the petitioning organization's product, service, research, equipment, techniques, management or other interests and its application in international markets, or an advanced level of knowledge of the organization's processes and procedures. USCIS assesses the totality of the evidence; the knowledge need not be proprietary or unique, and U.S. labour-market unavailability is not required.
Hypothetical example: a Lac-Beauport software architect's knowledge of a widely used framework is general skill, while deep knowledge of the employer's internal deployment platform may qualify if the evidence shows that it is special or advanced. The petition should identify the knowledge, show how the applicant acquired it, and explain how the U.S. assignment will use it.
Comparisons with colleagues and the difficulty of imparting the knowledge may support the case, but neither is a standalone test.