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Numbering system - India

DOCUMENT TYPES AND KIND CODES

18 month publication

  • publication of application
  • pre-grant opposition
  • WIPO code: A

Publication of specification

  • post-grant opposition (>2005)
  • WIPO code: A1

Patent of addition

  • published with a new number
  • WIPO code: A7, DocDB code: E

NUMBER FORMATS

nnnnn/LLL/yyyy    application numbers (> 1972)

  • five digits for the serial number (n)
  • three digits for the filing office/city code (L)
  • four digits for the year (y)

(nnnnn/LLLNP*/yyyy  PCT application numbers >2003)

(IN/PCT/yyyy/nnnnn/LLL   PCT application numbers < 2003)

* NP for national phase

Filing offices (LLL) 
Kolkata (formerly Calcutta)   = KOL (CAL) 
Mumbai (formerly Bombay)  = MUM (BOM)  
Chennai (formerly Madras)   = CHE (MAS)  
Delhi   = DEL  

nnnnnn    publication numbers (> 1912)

  • up to six digits for the serial number (n)
  • no city code
  • no year

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