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DIFF Subgroup
G01N 33/575

for cancer

Introduced: January 2026

Full Title

Full titles differ between systems:

IPC:

Investigating or analysing materials by specific methods not covered by groups > Biological material, e.g. blood, urine; Haemocytometers > Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing > Immunoassay; Biospecific binding assay; Materials therefor > for cancer

CPC:

Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00 > Biological material, e.g. blood, urine (G01N33/02, G01N33/26, G01N33/44, G01N33/46 take precedence); Haemocytometers (counting blood corpuscules distributed over a surface by scanning the surface G06M11/02) > Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing (measuring or testing processes involving enzymes or microorganisms, compositions or test papers therefor; processes for forming such compositions, condition responsive control in microbiological or enzymological processes C12Q) > Immunoassay; Biospecific binding assay; Materials therefor > for cancer

Of 17 combined children, 11 exist in both systems.

6 codes are CPC-only extensions.

IPC defines codes here since 2026.

Child Classifications

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  • G01N 33/57505 of the blood, e.g. leukaemia since 2026 IPC+CPC Available in IPC and CPC
  • G01N 33/5751 of the skin, e.g. melanoma since 2026 IPC+CPC Available in IPC and CPC
  • G01N 33/57515 of the breast since 2026 IPC+CPC Available in IPC and CPC
  • G01N 33/5752 of the lungs since 2026 IPC+CPC Available in IPC and CPC
  • G01N 33/57525 of the liver or pancreas since 2026 IPC+CPC Available in IPC and CPC
  • G01N 33/5753 of the stomach or small intestine since 2026 IPC+CPC Available in IPC and CPC
  • G01N 33/57535 of the large intestine, e.g. colon, rectum or anus since 2026 IPC+CPC Available in IPC and CPC
  • G01N 33/5754 of the renal system, e.g. kidneys or ureters since 2026 IPC+CPC Available in IPC and CPC
  • G01N 33/57545 of the ovaries since 2026 IPC+CPC Available in IPC and CPC
  • G01N 33/5755 of the uterine cervix, uterine corpus or endometrium since 2026 IPC+CPC Available in IPC and CPC
  • G01N 33/57555 of the prostate since 2026 IPC+CPC Available in IPC and CPC
  • G01N 33/57557 CPC only CPC only
  • G01N 33/5756 CPC only CPC only
  • G01N 33/57565 CPC only CPC only
  • G01N 33/5757 CPC only CPC only
  • G01N 33/57575 CPC only CPC only

Top Applicants

Top Applicants (IPC)

Class G01,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 41,447
  2. CHINESE ACADEMY OF SCIENCES 32,952
  3. ROBERT BOSCH DE 16,470
  4. SAMSUNG ELECTRONICS COMPANY KR 10,052
  5. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 9,573
  6. ZHEJIANG UNIVERSITY 9,529
  7. GUANGDONG POWER GRID CORPORATION 8,615
  8. TSINGHUA UNIVERSITY 7,805
  9. HALLIBURTON ENERGY SERVICES GROUP US 7,796
  10. QUALCOMM US 7,171

Top Applicants (CPC)

Class G01,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 21,460
  2. ROBERT BOSCH DE 17,801
  3. SGCC(STATE GRID CORPORATION OF CHINA) 17,347
  4. SAMSUNG ELECTRONICS COMPANY KR 13,192
  5. QUALCOMM US 9,900
  6. HALLIBURTON ENERGY SERVICES GROUP US 9,742
  7. PHILIPS ELECTRONICS NL 7,249
  8. MITSUBISHI ELECTRIC CORPORATION JP 6,503
  9. ZHEJIANG UNIVERSITY 6,414
  10. DENSO CORPORATION JP 6,382