Intellectual property – guidance

Examining patent applications relating to chemical inventions

These guidelines set out how we examine patent applications for chemical inventions.


This guide covers:

  • basic considerations
  • novelty
  • inventive step
  • industrial application
  • plurality
  • sufficiency
  • section 14(5): support
  • exclusions under section 1(2)
  • clarity and construction of claims
  • amendments
  • index of court cases and IPO decisions
  • index of European Patent Office and Technical Board of Appeal decisions