专利权出质登记是专利权质权的生效要件。
Registration is the requirement for the pledge on patent right to take effect.
第四条以共有的专利权出质的，除全体共有人另有约定的以外，应当取得其他共有人的同意。
Article 4 the pledge of a jointly owned patent right must be based on the consent of other co-owners, unless it is otherwise agreed upon by all co-owners.
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。
Article 3 the pledger and the pledgee of a patent right shall enter into a written pledge contract.
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