No. Initial approval is generally limited to one year, and the later request requires the relevant operating evidence and applicable conditions.
Prepare from actual developments
Retain records of business activity, funding and duties, and raise material departures from the plan. Do not assume that repeating the original forecast or keeping the office address establishes the later requirements.
Evidence assembly is the longest step, often several weeks; after filing, premium processing yields a decision within the published window and a Canadian citizen can enter on the approval notice without a visa appointment. Premium processing shortens USCIS adjudication but does not replace preparation or guarantee approval, and the customer's deadline does not change the legal standard. Next settle duties, petitioner control, location, and evidence, especially for an unaffiliated client site where the arrangement cannot be labour-for-hire. If the revised job is ordinary technical support using general industry skills, the original approval theory may no longer fit; preserving it unchanged is the common mistake. A blanket approval also does not lower the specialized-knowledge standard; it changes the procedure, not the evidence a particular employee must produce. Initial L-1B approval can be for up to three years, so an eighteen-month assignment fits inside one petition, and an extension is possible within the five-year maximum.