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DIFF Main Group
A61K 39/00

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

Introduced: July 1974

Title

Titles differ between systems:

IPC: Medicinal preparations containing antigens or antibodies

CPC: Medicinal preparations containing antigens or antibodies (materials for immunoassay G01N33/53)

Full Title

Full titles differ between systems:

IPC:

Medicinal preparations containing antigens or antibodies

CPC:

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

CPC subdivides this area 3x more granularly than IPC with 20 additional codes.

20 codes are CPC-only extensions.

Note: 13 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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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