Which of the following statements is true about European patent documents?

European patent literature

I. Types of patent applications

Patents.

Second, the patent examination and approval procedures

Patent: early disclosure and delayed review system, application-disclosure-authorization.

Three. Duration of patent protection

Patent: 20 years from the date of application.

Four. Types of patent specifications

Description of application -A 1: Description with search report without substantive examination and patent right granted.

Description of application -A2: Description of no retrieval report that has not been granted patent right without substantive examination.

Search Report -A3: the search report of the specification that has not been granted the patent right without substantive examination.

Supplementary search report-A4: Supplementary search report for instructions that have not been granted patent right without substantive examination.

Title page of the revised application specification -A8: the title page of the specification without substantive examination.

Revised application specification -A9: A specification that has not been granted a patent right modification without substantive examination.

Patent specification -B 1: the specification for granting the patent right after substantive examination.

Revised patent specification -B2: revised specification for granting patent right after substantive examination.

Revised patent specification title page -B8: the revised patent specification title page granted after substantive examination.

Revised patent specification -B9: revised specification for granting patent right after substantive examination.

Title page of the patent specification modified for the second time -C8: Title page of the specification granted for the second patent modification after substantive examination.

Patent Specification for the Second Revision -C9: Patent Specification for the second revision granted after substantive examination.