JPO refused to register 3D shape of Mitsubishi Electric’s spiral escalator

The Appeal Board of Japan Patent Office (JPO) disallowed registration of 3D shape of Mitsubishi Electric’s spiral escalator due to lack of inherent distinctiveness and secondary meaning in relation to escalators, class 7. [Appeal case no. 2017-6855]

Spiral escalator

Mitsubishi Electric Corporation first developed the spiral escalator in 1985, and has been the world’s first and sole manufacturer of spiral escalators. Spiral escalator is a special design type of escalator in the form of a spiral/helical with curved steps.
On May 3, 2016, Mitsubishi Electric filed a trademark application for 3D shape of spiral escalator (see below) by designating escalators in class 7 to the JPO [TM application no. 2016-23374].

The JPO examiner totally refused the application based on Article 3(1)(iii) of the Japan Trademark Law stating that the applied mark can be easily seen as a 3D shape of escalator and the shape does solely consist of a common configuration to achieve the basic function of escalator. If so, the applied mark lacks distinctiveness as a source indicator.

To dispute the refusal, Mitsubishi Electric filed an appeal on May 12, 2017.

Appeal Board’s decision

The Appeal Board, however, upheld the examiner’s decision on the ground and dismissed Mitsubishi’s allegation by stating that relevant consumers and traders shall conceive of an escalator designed to enhance its function or sensuousness at the sight of applied mark.

Acquired distinctiveness

Mitsubishi Electric also argued that even if the applied mark is deemed descriptive in relation to escalators, it shall be registrable based on Article 3(2) due to acquired distinctiveness of the mark because Mitsubishi Electric Spiral Escalators has achieved 100 % market share in the world and continuously used the 3D shape on escalators for more than three decades.

Article 3(2) is a provision to allow registration of applied mark if, as a result of substantial use of the mark in fact, consumers are able to connect the mark with a source indicator of designated goods or services.

Under the totality of the circumstances, the Appeal Board dismissed the allegation as well.

The Board found that regardless of 100 % market share in the category of spiral escalators, Mitsubishi Electric’s domestic supply record of 24 units in the last thirty years shall be a trivial quantity in comparison with total number of escalators in operation. Besides, questionnaire result rather shows a source of the applied mark is unknown to more than 60% of the questionee.

Based on the foregoing, the Board questioned whether applied mark has acquired distinctiveness through actual use in relation to escalators and consequently refused to register the mark based on Article 3(1)(iii) and 3(2) of the Trademark Law.


Masaki MIKAMI, Attorney at IP law – Founder of MARKS IP LAW FIRM