No. Specialized knowledge does not need to be proprietary, patented, or held in secrecy; it must be special knowledge of the company’s product or service and its application in international markets, or advanced knowledge of the company’s processes or procedures, rather than general industry skill.
Focus on comparative uncommonness
Prepare a description of how a typically experienced process engineer elsewhere in the industry would approach the same calibration problem, and where Marcus's approach and depth of understanding diverge. Avoid arguing uniqueness within the company alone, since the industry-wide comparison is what the specialized-knowledge standard actually asks.
The review should identify a discrete body of company knowledge and then test whether the proposed U.S. duties actually require it. Create a table with the knowledge item, the evidence of how it was gained, the number of people who hold it, and the business consequence if it is unavailable. Hypothetical example: A semiconductor yield-analysis specialist knows a proprietary internal method for diagnosing a recurring fabrication defect, but the proposed U.S. job is ordinary shift supervision. The evidence may prove unusual knowledge, yet the assignment still needs a clear connection to that knowledge. Confirm the corporate relationship and the qualifying foreign-employment timeline separately; a strong knowledge narrative cannot cure either gap. The first review should state whether the employee will perform specialized work for the petitioner rather than fill a labour-for-hire role at a client’s direction. This turns an abstract claim into a filing decision.
Ask a manager who is not drafting the petition to describe how the U.S. team would solve the same problem without this employee. The answer can reveal whether the claimed knowledge is genuinely particular to the company or merely valuable professional experience held by many workers.