2.5
Abbreviations 

In these Guidelines, the following abbreviations are used:

AAD

Arrangements for the automatic debiting procedure

ADA

Arrangements for deposit accounts

AI

Administrative Instructions under the PCT

ARIPO

African Regional Intellectual Property Organization

Art.

Article

EPC

European Patent Convention

EPO

European Patent Office

ESOP

European search opinion

GL/EPO

Guidelines for Examination in the EPO

GL/ISPE

PCT International Search and Preliminary Examination Guidelines

GL/PCT‑EPO

Guidelines for Search and Examination at the EPO as PCT Authority

GL/RO

PCT Receiving Office Guidelines

IB

International Bureau

IPE

International preliminary examination

IPEA

International Preliminary Examining Authority

IPER

International preliminary examination report

IPRP

International preliminary report on patentability

ISA

International Searching Authority

ISR

International search report

OJ EPO

Official Journal of the European Patent Office

PCT

Patent Cooperation Treaty

PCT AG I

PCT Applicant's Guide – Introduction to the International Phase

PCT-CLAR

Request for clarification before search

PPH

Patent Prosecution Highway

RFees

Rules relating to Fees

RO

Receiving Office

SIS

Supplementary international search

SISA

Supplementary International Searching Authority

SISR

Supplementary international search report

WIPO

World Intellectual Property Organization

WO‑ISA

Written opinion of the International Searching Authority

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