List of Articles Patent Application Open Access Article Abstract Page Full-Text 1 - A Study about Registration Level of Patent Offices in European Union, U.S.A and Iran Shima sadat Hashemi Open Access Article Abstract Page Full-Text 2 - On the use of Intelligent Information Retrieval in Patent Prior-Art Search Habibollah Asghari Azadeh Shakery 10.61186/jstpi.44174.20.77.24