Access method
1. direct access
Website: http://ipsearch.ipd.gov.hk/
2. Access through the China National Intellectual Property Administration website link.
China National Intellectual Property Administration Government Website/Patent Search of Foreign Countries, Hong Kong, Macao and Taiwan-Online Search System of Hong Kong Intellectual Property Department
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Select "Patent" to display "Traditional Chinese", that is, enter its patent retrieval system.
Patent retrieval
Each database has two retrieval interfaces: simple retrieval and advanced retrieval.