1. All of the plaintiffs' claims are dismissed.

2. The costs of lawsuit are assessed against the plaintiffs.

1. Basic facts

A. The defendant and D's business partnership agreement concluded on October 2, 2008 is the Housing Reconstruction and Improvement Project Association established under the Act on the Maintenance and Improvement of Urban Areas and Dwelling Conditions for Residents for the implementation of the Housing Reconstruction and Improvement of Residents for the Nam-gu, Dong-gu, and Dong-gu.

On October 2, 2008, the Defendant entered into an agreement on the business partnership with D Co., Ltd. (hereinafter “D”) containing the following contents:

Article 1. The objective of this Convention is to promote the mutual benefits of the defendant and D in their business affairs.

Article 2. Details of cooperative relations under this Convention are as follows:

(i) the basic design 3F construction for F construction 2) F construction;

B. The Defendant and G Co., Ltd. entered into an F establishment agreement on October 29, 2010 1) Defendant on October 29, 2010 (hereinafter “G”)

The term “F Construction Convention” was concluded with G on the same day, which includes the following contents, and on the same day, G sent the official letter stating that “D’s entire rights and obligations with respect to the Convention on October 2, 2008 were succeeded to G.” This Convention is based on F Subcommittee Resolution (Report September 2009). The term “F” refers to ① The term “F” refers to the system such as the overall home network, the overall system of the public facilities, the integrated situation room of the Complex Management Center, and the overall area of communications, which can support the ubiquitous life to the apartment of the Defendant. ② The basic design is based on the F basic design drawings and specifications based on the approval of the project performed in D from 2007 to 209. ③ The basic design refers to the actual construction of the construction of the infrastructure in accordance with the construction of the project with the construction project approved after January 2, 2010 and the details of the integrated housing management plan, including the construction of the basic design and the details of the collective housing management agreement.