1. Overview
Trademarks, and service(Trademark hereinafter) marks may be protected in the Republic of Korea under the Trademark Act; and for such protection, marks should be registered with the Korean Intellectual Property Office ("KIPO"). Unregistered marks are not protected under the Trademark Act, although the owner of a well-known or famous mark is given some protection under the Trademark Act by way of preventing others from obtaining a trademark registration for an identical or similar mark. There is no course of action against infringement of a well-known or famous unregistered trademark under the Trademark Act, but an action may be brought under the Unfair Competition Prevention Act.

Characteristics of the Korean Trademark Law
(1) First-to-File Rule, (2) Substantial Examination, (3) Pre-grant Opposition
2. Filing an Application
(1) Applicant
Any person who uses or intends to use a trademark in the Republic of Korea may file an application for the registration of a trademark. Trademarks which will not actually be used are also registered. Such trademarks, however, will be subject to cancellation if they remain unused for three or more consecutive years after their registration.

(2) Document Required
(a) an application stating the following: the name and address of the applicant; the trademark; the designated goods and class thereof; the date of submission; and the country and filing date of the priority application, if the right of priority is claimed;
(b) 10 specimens of the trademark (7cm x 7cm or smaller in size);
(c) if the right of priority is claimed, the priority document; and
(d) a power of attorney, if necessary.

(3) Designation of Goods/Services: Nice Classification
A person who desires to file a trademark application must designate goods/services on which the trademark is to be used in accordance with the Nice Classification of Goods or Services for the Purpose of Registration of Marks. The Republic of Korea adopted the Nice Classification as of March 1, 1998.
A trademark application may be filed for the registration of trademark for goods or services which fall under several classes in accordance with the Nice Classification. In this case, the applicant has to pay additional fees for each classification.

iv) Claim of Priority
The right of priority can be claimed in a trademark application for a applicant whose country of origin is a party to the Paris Convention or under a bilateral agreement between two relevant governments or on a reciprocal basis. In order to enjoy the priority right, an application should be filed in the Republic of Korea within 6 months from the filing date of the priority application. The priority document should be submitted to KIPO within 3 months from the filing date of his/her application.
3. Formality Examination
Once a trade mark application is submitted to KIPO, it will be checked to ensure that all requirements necessary to accord the application a filing date have been satisfied.
4. Substantial Examination
(1) Initiation of Examination
Unlike patent or utility model applications, trademark applications are automatically examined in order of their filing date. No request for examination is needed for the initiation of substantial examination.

(2) Requirement for Registration
(a) It should fall under the definition of a trademark prescribed in the Trademark Act:
(b) It should be distinctive so as to serve as an indication of goods or services or, if it is not inherently distinctive, it should have acquired a secondary meaning;
(c) It should not fall into any of the categories of unregistrable trademark prescribed in the Trademark Act.

In addition to the reason for rejection, an opposition against the application can be filed by the owner of a trademark registered in the territory of a member country of a treaty to which the Republic of Korea has acceded, if both the trademark and the designated goods of the application are identical with, or similar to, those of the foreign trademark registration and if the application is filed by a person who is, or used to be, an agent or a representative of the owner of the registered trademark within 1 year prior to the filing date of the application concerned without obtaining the authorization or consent from the owner of the registered trademark.
5. Publication and Pre-Grant Opposition
If the examiner finds no ground for rejection of a trademark application, or he considers that the rejection has been overcome by the applicant's response (argument and/or amendment), he shall render a decision to publish the trademark application.

Once a trademark application is published in the official gazette, called the "Trademark Publication Gazette," any person may file an opposition within 2 months from the publication date.
6. Rejection, Registration, Appeal and Trial
Rejection, Registration, Appeal and Trial procedure is same with those of patent.
7. Renewal
The duration of the protection of a trademark right is 10 years from the date of registration of the trademark, which may be renewed every 10 years. For the renewal of a trademark registration, an application for the renewal should be filed with KIPO.
8. Protention of Foreign well-known Trademarks in Korea
(1) Regardless of whether or not they are registered under the Trademark Act, well-known or famous marks are protected by way of barring the registration of a mark which is identical with, or similar to, such marks. An application for the registration of such mark filed by a person other than the owner of the famous mark will be rejected; and, if the registration is erroneously granted, it will be subject to invalidation.

(2) Even if goods and/or service concerning a trademark application are not identical with or similar to those of a well-known trademark, the application shall be refused due to the possibility of misleading the consumers about the origin of goods or services. Furthermore, an interested party may request a trial or invalidation of registration of such a trademark if it has been registered.

(3) It is prescribed in the revised Trademark Act which became effective as of March 1, 1998 that the registration of a trademark shall be refused when the application is made for unfair purposes, such as the aim of free-riding on the reputation of the marks which are well-known in the Republic of Korea.

(4) In addition to the Korean Trademark Law, the Unfair Competition Prevention Act also provide the protection of well-known trademarks. Any person who is, or is likely to be, injured by acts of unfair competition such as acts causing confusion with another person's goods or business facilities by using an indication identical with or similar to another person's name, tradename or marks, including well-known trademarks, may bring a civil action before the court seeking an injunctive relief, monetary damage and/or restoration of injured business reputation or goodwill. Furthermore, the Law also set forth criminal provisions.