Gram-negative bacteria

Introduced: January 2026

Full Title

Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies > against material from bacteria > Gram-negative bacteria

Classification Context

Section:: CHEMISTRY; METALLURGY
Class:: ORGANIC CHEMISTRY
Subclass:: PEPTIDES

Filing statistics

IPC C07K 16/1203 belongs to the parent subclass C07K, which recorded 434,419 patent applications worldwide between 2013 and 2023. Annual filings grew from 29,263 in 2013 to 39,574 in 2023 (+35%), peaking at 47,586 applications in 2021. The most active applicants in class C07 are CHINESE ACADEMY OF SCIENCES (12,697 applications), ROCHE (11,347 applications) and SINOPEC (CHINA PETROCHEMICAL CORPORATION) (11,024 applications).

Source: EPO PATSTAT, worldwide filings

7 direct subcodes

Child Classifications

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C07K 16/121 Helicobacter (G); Campylobacter (G)
C07K 16/1214 Pseudomonadaceae (F)
C07K 16/1217 Neisseriaceae (F)
C07K 16/1218 Acinetobacter (G)
C07K 16/1228 Enterobacterales (O), e.g. Citrobacter (G), Serratia (G), Proteus (G), Providencia (G), Morganella (G) or Yersinia (G)
C07K 16/1246 Rickettsiales (O)
C07K 16/126 Legionella (G)

Top Applicants

Top 10 applicants by patent filingsfor class C07, 2013–2023, worldwide · Source: EPO PATSTAT

CHINESE ACADEMY OF SCIENCES 12,697
ROCHE CH 11,347
SINOPEC (CHINA PETROCHEMICAL CORPORATION) 11,024
NOVARTIS CH 9,356
BASF (BADISCHE ANILIN & SODA FABRIK) DE 8,531
BRISTOL-MYERS SQUIBB COMPANY US 7,320
LG CHEM KR 7,245
REGENERON PHARMACEUTICALS US 6,816
HARVARD UNIVERSITY US 6,190
GENENTECH US 5,922