Section 17(4)
PA 1977
Patents Act 1977 · United Kingdom
Subject to subsections (5) and (6) below, on a search requested under this section, the examiner shall make such investigation as in his opinion is reasonably practicable and necessary for him to identify the documents which he thinks will be needed to decide, on a substantive examination under section 18 below, whether the invention for which a patent is sought is new and involves an inventive step.
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Source: legislation.gov.uk · retrieved 2026-09-04