Guide to Reading Japanese, German, and Korean Patent PDFs: INID Codes and Claim Parsing

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The article explains how R&D and legal teams can work through patent documents written in Japanese, German, or Korean when conducting prior art, infringement, or freedom-to-operate searches. It describes the WIPO INID codes printed in parentheses on patent front pages, which identify fields such as publication number, document kind, filing date, priority data, and grant date. These codes help readers quickly determine whether a document is an unexamined application or a granted patent and assess its effective date. The guide also covers syntax strategies for parsing complex claims and a workflow for cross-referencing reference numerals with engineering drawings.

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