9. Commitments and Contingencies Operating Lease In October 2012, the Company entered into a lease agreement for 9,605 square feet of office and warehouse space commencing March 1, 2013. As of December 31, 2017, remaining average monthly lease payments were $ 10,387 through July 2018. Upon entering into the agreement, the Company paid a deposit of $ 47,449 , of which $ 36,979 represented prepaid rent. As of December 31, 2017, $ 10,470 remained on deposit under the lease agreement. In connection with the acquisition of VectorVision on September 29, 2017, the Company assumed a lease agreement for 5,000 square feet of office and warehouse space commencing October 1, 2017. As of December 31, 2017, remaining average monthly lease payments were $ 1,799 through February 2023. As of December 31, 2017 and 2016, the Company had accrued and deferred rent payable for its office and warehouse facilities under its lease agreement in the aggregate of $ 1,650 and $ 88,290 , respectively. The approximate future minimum lease payments under non-cancelable operating leases at December 31, 2017 are as follows: Years ending December 31, 2018 $ 93,000 2019 20,898 2020 21,520 2021 22,174 2022 and thereafter 26,670 $ 184,262 Rent expense was $ 111,167 and $ 106,217 for the years ended December 31, 2017 and 2016, respectively. Contingencies The Company is periodically the subject of various pending or threatened legal actions and claims arising out of its operations in the normal course of business. In the opinion of management of the Company, adequate provision has been made in the Companys condensed financial statements at December 31, 2017 with respect to such matters, including the matter noted below. On or about July 26, 2017, the Company received a payment demand from a former consultant to the Company alleging that the consultant is owed approximately $ 192,000 for services rendered. The Company has disputed this demand and attempts to resolve this matter were unsuccessful. On January 29, 2018, the Company filed a lawsuit against