Grounds for refusal Under Clause 1 of Article 1377 of the Civil Code of the Russian Federation the application for grant of a patent for an industrial design shall be related to one industrial design or to a group of industrial designs associated with each other so closely as to form a single creative concept (the requirement of unity of the industrial design). This requirement is met where there is: one independent and distinct industrial design; or one industrial design and its variants differing from that industrial design by visually non-essential features and/or by color combination; or a group of industrial designs belonging to the same set of articles, as well as one or more industrial designs for separate articles belonging to the same set of articles. It is required that all industrial designs of the group shall belong to the same class of International Classification for Industrial Designs (Locarno classification). Under Clause 1 of Article 1352 of the Civil Code of the Russian Federation the essential features of an industrial design shall include features determining the aesthetic characteristics of the external appearance of the article, in particular, the shape, configuration, ornamentation, combination of colors, lines, contours of the article, texture or material of the article. The essential features of the external appearance are recognized as essential if they determine the aesthetic characteristics of the external appearance of an article, being dominant and determine the overall visual impression. The non-essential features of the external appearance include such slightly distinguishable and inexpressive features of the external appearance of an article, the exclusion of which from the set of the features of the external appearance does not lead to a change the overall visual impression (clause 72 of the Rules for the drafting, filing and examination of the documents, that are the basis for legally significant actions on the state registration of an industrial design). The claimed group of industrial designs includes: the industrial design 1: fig. 1.1 1.7; the industrial design 2: fig. 2.1 2.7; the industrial design 3: fig.