DAS access codes are randomly generated by the server as 4-character hexadecimal codes, meaning each character is drawn from a set of 16 possible values (digits 0–9 and letters A–F), yielding 16⁴ = 65,536 possible combinations.

Because the codes are generated randomly, repetition across different filings is not only possible but expected. With over 300,000 registrations per year, the same code will inevitably be assigned to multiple files — this is completely normal and by design.

This does not pose any security concern. An access code alone does not grant access to any document. To retrieve a specific file, an Office of Second Filing (OSF) must provide all three of the following pieces of information:

  1. The application number
  2. The filing date
  3. The access code

Only the exact combination of these three elements allows access to a specific file, making the system secure despite the limited code pool.



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