The EB-1B values a consistent and well-documented track record as a researcher or professor, rather than a fixed number of years. Because the minimum time required is a criterion that can change and be interpreted on a case-by-case basis, it is best to confirm it directly at the official source rather than relying on a figure from memory.
This is the pathway for professors and researchers with international recognition. More important than pinpointing a specific period is being able to demonstrate genuine experience in the field: publications, research projects, teaching, and other contributions that show excellence and professional maturity. Time spent in research and teaching roles can typically be combined to build this track record.
In practice, what sustains the petition is the quality and coherence of that history, not simply a count of years. A shorter but substantial and well-documented career tends to carry more weight than a longer period without clear evidence of distinction.
Because this is a requirement subject to updates, it is worth verifying the time required and how to document it directly with USCIS, ideally with the support of a specialist.
Learn more about EB-1
- Category
- EB-1 Green Card (1st priority)
- Requirement
- Extraordinary ability
- Self-petition
- Allowed (no sponsor needed)
- Processing
- 6-18 months
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About the author
Victoria Harper
Editor-in-Chief
As a journalist and lead editor at Visto n’ Visa, Victoria helps ensure that immigration topics are covered in a clear, trustworthy, and easy-to-understand way. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.