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CPC Subgroup
A61K 35/14

Blood; Artificial blood (perfluorocarbons A61K31/02; umbilical cord blood A61K35/51; haemoglobin A61K38/42)

Full Title

Medicinal preparations containing materials or reaction products thereof with undetermined constitution > Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells (vaccines or medicinal preparations containing antigens or antibodies A61K39/00) > Blood; Artificial blood (perfluorocarbons A61K31/02; umbilical cord blood A61K35/51; haemoglobin A61K38/42)

Filing statistics

CPC A61K 35/14 belongs to the parent subclass A61K, which recorded 1,717,491 patent applications worldwide between 2013 and 2023. Annual filings grew from 114,681 in 2013 to 125,843 in 2023 (+10%), peaking at 182,901 applications in 2016. The most active applicants in class A61 are PHILIPS ELECTRONICS (20,621 applications), NOVARTIS (15,792 applications) and ROCHE (14,303 applications).

Source: EPO PATSTAT, worldwide filings

5 direct subcodes

Child Classifications

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  • A61K 35/15 Cells of the myeloid line, e.g. granulocytes, basophils, eosinophils, neutrophils, leucocytes, monocytes, macrophages or mast cells; Myeloid precursor cells; Antigen-presenting cells, e.g. dendritic cells (presenting a specific antigen A61K39/00; therapeutic combinations of antibodies, or fragments thereof, and blood-derived cells A61K39/00)
  • A61K 35/16 Blood plasma; Blood serum (umbilical cord blood A61K35/51)
  • A61K 35/17 Lymphocytes; B-cells; T-cells; Natural killer cells; Interferon-activated or cytokine-activated lymphocytes (when activated by a specific antigen A61K39/00)
  • A61K 35/18 Erythrocytes (haemoglobin A61K38/42)
  • A61K 35/19 Platelets; Megacaryocytes

Top Applicants

Top 10 applicants by patent filingsfor 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