No universal secrecy requirement should be assumed. Assess the actual special or advanced company knowledge and the full case.
Explain the expertise beyond access to information
A public article may describe a topic without establishing the employee’s practical ability or the relevant standard. Neither publicity nor confidentiality decides every requirement.
The regulation defines specialized knowledge by reference to the petitioning organization: its product, service, research, equipment, techniques, management or other interests, or an advanced level of knowledge of its processes and procedures. Knowledge of a regeneration sequence developed inside the company, recorded in its own schedules and refined against its own field results, can support this category, but qualifying knowledge need not be proprietary or unique. A grower who developed the company's own climate-control thresholds, its substrate recipe and the sequence it uses to move plugs from germination to finishing holds knowledge that exists only inside the company. Ask who will select and explain training records, compare ordinary skill with the claimed organizational knowledge, manage confidential exhibits, and document the foreign year and qualifying relationship. The related-company relationship and the foreign work history are separate gates: the employee normally needs twelve continuous qualifying months abroad in the prior three years, and L-1B is limited to five years overall. No set training duration qualifies anyone, and completing a programme is not itself the showing; what matters is knowledge of the organisation's own products, services, or advanced processes, evidenced by the facts of work performed.