Frequently Asked Questions

	Methods of Treatments	Extension of Patent Term Available	Substantive Examination	Computer Programs Patentable	Surcharges Payable	Languages
China	Not Allowed	No	Yes	No	Yes	English
Hong Kong	Pharmaceutical products not patentable	No	Yes	No	Yes	French & Arabic
Taiwan	Yes	Yes	No	No	3 Years	Yes
Macao	Yes	Yes	No	No	3 Years	Yes
Vietnam	Yes	Yes	No	No	3 Years	Yes
Singapore	Yes	Yes	No	No	3 Years	Yes
Japan	Yes	Yes	No	No	3 Years	Yes
Philippines	Yes	Yes	No	No	3 Years	Yes
South Korea	Yes	Yes	No	No	3 Years	Yes
Thailand	Yes	Yes	No	No	3 Years	Yes
United Arab Emirates	Yes	Yes	No	No	3 Years	Yes
India	Yes	Yes	No	No	3 Years	Yes
Pakistan	Yes	Yes	No	No	3 Years	Yes
Sri Lanka	Yes	Yes	No	No	3 Years	Yes
Kazakhstan	Yes	Yes	No	No	3 Years	Yes
Uzbekistan	Yes	Yes	No	No	3 Years	Yes
Iraq	Yes	Yes	No	No	3 Years	Yes
Iran	Yes	Yes	No	No	3 Years	Yes
North Korea	Yes	Yes	No	No	3 Years	Yes
Nepal	Yes	Yes	No	No	3 Years	Yes
Myanmar	Yes	Yes	No	No	3 Years	Yes
Mongolia	Yes	Yes	No	No	3 Years	Yes
Armenia	Yes	Yes	No	No	3 Years	Yes
Georgia	Yes	Yes	No	No	3 Years	Yes
Tajikistan	Yes	Yes	No	No	3 Years	Yes
Kyrgyzstan	Yes	Yes	No	No	3 Years	Yes
Republic of Maldives	Yes	Yes	No	No	3 Years	Yes
Azerbaijan	Yes	Yes	No	No	3 Years	Yes
Palestine	Yes	Yes	No	No	3 Years	Yes
Laos	Yes	Yes	No	No	3 Years	Yes
Brunei	Yes	Yes	No	No	3 Years	Yes
Cambodia	Yes	Yes	No	No	3 Years	Yes
Turkmenistan	Yes	Yes	No	No	3 Years	Yes
Yemen	Yes	Yes	No	No	3 Years	Yes
Jordan	Yes	Yes	No	No	3 Years	Yes
Saudi Arabia	Yes	Yes	No	No	3 Years	Yes
Qatar	Yes	Yes	No	No	3 Years	Yes
Kuwait	Yes	Yes	No	No	3 Years	Yes
Bahrain	Yes	Yes	No	No	3 Years	Yes
Syria	Yes	Yes	No	No	3 Years	Yes
Lebanon	Yes	Yes	No	No	3 Years	Yes
Israel	Yes	Yes	No	No	3 Years	Yes
Oman	Yes	Yes	No	No	3 Years	Yes
Afghanistan	Yes	Yes	No	No	3 Years	Yes
Malaysia	Yes	Yes	No	No	3 Years	Yes
Bangladesh	Yes	Yes	No	No	3 Years	Yes
Timor-Leste	Yes	Yes	No	No	3 Years	Yes
Cyprus	Yes	Yes	No	No	3 Years	Yes
Palestine	Yes	Yes	No	No	3 Years	Yes

Why Us

Chang Tsi & Partners provides global annuity management services for patents, trademarks, and design rights.

Through centralized annuity ledger management, automated renewal reminder systems, and coordination with local agents, we ensure the continuous validity of clients' IP rights across Greater China and Asia. Our services include managing the annuity payment process, conducting compliance reviews, and maintaining complete payment records, helping clients minimize risks and administrative burdens.

With rigorous process controls and meticulous financial management, Chang Tsi offers efficient, transparent, and traceable annuity support globally.

Partner | Attorney at Law

Litigation & Dispute Resolution / Corporate Law

Beijing

Frequently Asked Questions

Why Us

Chang Tsi & Partners provides global annuity management services for patents, trademarks, and design rights.

Our Team

Partner | Attorney at Law