合伙人 | 律师
争议解决 | 商事法务
北京
We specialize in the management of patent annuity payments across Asia - from fee calculation to multi-country payment processing. Our centralized service ensures compliance while minimizing administrative burdens.
Methods of Treatments | Extension of Patent Term Available | Substantive Examination | Computer Programs Patentable | Surcharges Payable | Languages | |
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Not Allowed | No | Yes | No | Yes | English |
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Pharmaceutical products not patentable | No | Yes | No | Yes | French & Arabic |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
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Yes | Yes | No | No | 3 Years | Yes |
From currency conversion to payment verification, we handle all aspects of annuity fee transactions across 20+ Asian jurisdictions. Our secure payment systems and audit trails provide full transparency for your records.
We go beyond basic payments by analyzing fee schedules to identify cost-saving opportunities. Whether adjusting portfolio coverage or timing payments strategically, we help optimize your patent maintenance investments in Asia.
Chang Tsi & Partners has been recognized as a Tier 1 Firm for both patent and trademark practices in Managing IP’s 2025 Asia IP Rankings. Three partners were individually ranked among Asia’s leading IP practitioners.