Unless otherwise agreed, the right to apply for a patent belongs to the invention-creation completed in cooperation with two or more units or individuals, or the invention-creation entrusted by other units or individuals; After the application is approved, the applicant unit or individual shall be the patentee.
Therefore, the applicants in the same patent application can be two different companies.
Article 4 Measures for patent fee reduction and exemption
Where two or more individuals or individuals and units apply for a patent at the same time, they may request that 70% of the application fee, examination fee and annual fee for an application for a patent for invention and 60% of the maintenance fee and examination fee for an application for a patent for invention be deferred.
If more than two * * * units apply for a patent at the same time, the patent fee will not be slowed down.