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DIFF Subgroup
A61K 39/12

Viral antigens

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Medicinal preparations containing antigens or antibodies > Viral antigens

CPC:

Medicinal preparations containing antigens or antibodies (materials for immunoassay G01N33/53) > Viral antigens

IPC and CPC are identically structured here. All 16 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1974.

Child Classifications

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  • A61K 39/145 Orthomyxoviridae, e.g. influenza virus since 1980 IPC+CPC Available in IPC and CPC
  • A61K 39/15 Reoviridae, e.g. calf diarrhea virus since 1980 IPC+CPC Available in IPC and CPC
  • A61K 39/187 Hog cholera virus since 1980 IPC+CPC Available in IPC and CPC
  • A61K 39/193 Equine encephalomyelitis virus since 1980 IPC+CPC Available in IPC and CPC
  • A61K 39/20 Rubella virus since 1974 IPC+CPC Available in IPC and CPC
  • A61K 39/205 Rhabdoviridae, e.g. rabies virus since 1980 IPC+CPC Available in IPC and CPC
  • A61K 39/21 Retroviridae, e.g. equine infectious anemia virus since 1980 IPC+CPC Available in IPC and CPC
  • A61K 39/23 Parvoviridae, e.g. feline panleukopenia virus since 1980 IPC+CPC Available in IPC and CPC
  • A61K 39/235 Adenoviridae since 1980 IPC+CPC Available in IPC and CPC
  • A61K 39/295 Polyvalent viral antigens (vaccinia virus or variola virus A61K39/285); Mixtures of viral and bacterial antigens since 1980 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class A61,2013–2023, worldwide · Source: EPO PATSTAT

  1. PHILIPS ELECTRONICS NL 18,523
  2. NOVARTIS CH 14,253
  3. COVIDIEN US 13,953
  4. ROCHE CH 12,005
  5. CHINESE ACADEMY OF SCIENCES 11,955
  6. UNIVERSITY OF CALIFORNIA US 11,692
  7. HARVARD UNIVERSITY US 11,596
  8. L'OREAL FR 11,593
  9. P&G (PROCTER & GAMBLE COMPANY) US 11,297
  10. OLYMPUS CORPORATION JP 9,594

Top Applicants (CPC)

Class A61,2013–2023, worldwide · Source: EPO PATSTAT

  1. PHILIPS ELECTRONICS NL 20,621
  2. NOVARTIS CH 15,792
  3. ROCHE CH 14,303
  4. COVIDIEN US 13,862
  5. HARVARD UNIVERSITY US 13,454
  6. UNIVERSITY OF CALIFORNIA US 12,798
  7. P&G (PROCTER & GAMBLE COMPANY) US 12,140
  8. L'OREAL FR 11,800
  9. OLYMPUS CORPORATION JP 9,894
  10. BOSTON SCIENTIFIC SCIMED US 9,513