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CPC Subgroup
C12Q 1/6844

Nucleic acid amplification reactions

Full Title

Measuring or testing processes involving enzymes, nucleic acids or microorganisms (measuring or testing apparatus with condition measuring or sensing means, e.g. colony counters, C12M1/34); Compositions therefor; Processes of preparing such compositions > involving nucleic acids > Nucleic acid amplification reactions

Filing statistics

CPC C12Q 1/6844 belongs to the parent subclass C12Q, which recorded 272,350 patent applications worldwide between 2013 and 2023. Annual filings grew from 18,205 in 2013 to 23,458 in 2023 (+29%), peaking at 28,974 applications in 2021. The most active applicants in class C12 are HARVARD UNIVERSITY (8,321 applications), CHINESE ACADEMY OF SCIENCES (7,486 applications) and UNIVERSITY OF CALIFORNIA (7,320 applications).

Source: EPO PATSTAT, worldwide filings

9 direct subcodes

Child Classifications

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  • C12Q 1/6846
  • C12Q 1/6848 characterised by the means for preventing contamination or increasing the specificity or sensitivity of an amplification reaction
  • C12Q 1/6851 Quantitative amplification
  • C12Q 1/6858 Allele-specific amplification
  • C12Q 1/686 Polymerase chain reaction [PCR]
  • C12Q 1/6862 Ligase chain reaction [LCR]
  • C12Q 1/6865 Promoter-based amplification, e.g. nucleic acid sequence amplification [NASBA], self-sustained sequence replication [3SR] or transcription-based amplification system [TAS]
  • C12Q 1/6867 Replicase-based amplification, e.g. using Q-beta replicase

Top Applicants

Top 10 applicants by patent filingsfor class C12, 2013–2023, worldwide · Source: EPO PATSTAT

  1. HARVARD UNIVERSITY US 8,321
  2. CHINESE ACADEMY OF SCIENCES 7,486
  3. UNIVERSITY OF CALIFORNIA US 7,320
  4. REGENERON PHARMACEUTICALS US 5,003
  5. INSERM (INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE) FR 4,292
  6. UNIVERSITY OF PENNSYLVANIA US 4,213
  7. CNRS (CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE) FR 4,113
  8. JIANGNAN UNIVERSITY 3,961
  9. ROCHE CH 3,792
  10. ILLUMINA US 3,692