Article 3 the pledger and the pledgee of a patent right shall enter into a written pledge contract.

第三条以专利权出质的，出质人与质权人应当订立书面质押合同。

youdao

Article 3 the pledger and the pledgee of a patent right shall enter into a written pledge contract.

第三条以专利权出质的，出质人与质权人应当订立书面质押合同。

youdao