Request of nullity of a patent，any person or organization think patent is against the law, could request of nullity of a patent, if patent is declare nullity, it will see as nullity from the begin.
I Application of patent nullity request.
（1）In practical investigate, because of complexity and boundedness of patent, or didn’t do the practical investigate, some patent will get certificate but it’s should not.
（2）In fact, patent nullity request is always use as the fight back measures who is under the prosecute of patent infringement. In some specific industry, someone will request of nullity of patent if they think it’s cause the unfair monopoly.
（3）Some patent owner will request of nullity of patent to some similarity patent to protect it’s own technology and market advantage.
II Necessary information
（1）ID of applicant(ID or business license);
（2）Patent, technical and other document about the nullity patent.
（3）Please supply these document as below if Request of nullity or infringement of a patent.
a) Product, photo, product specification and other document；
b) All the document include the lawsuit request from the people’s court.
c) Infringing information about the business, technology source, time, production.
（4）Sign the power of attorney.
III Service process
（1）Patent consult；（2）Pay the order；（3）Request；（4）Schedule report；（5）Service complete.
IV Patent office process
（1）Submit apply；（2）Accept apply；（3）Investigate apply；（4）Issue the order.
V Requisition cycle
（1）Client submit the apply document→Write the document(in 7 working days);
（2）Client confirm the apply document→Submit to patent office(in 1-5 working days);
（3）Summit request→accept request(in 1 month)
（4）Investigate apply→Give a ruling(in 8-12 months)
Attention: Above is just for reference, please follow the rule of patent office as the criterion.