The Company has entered into lease agreements for office space and research facilities in San Diego County, California; Melbourne, Florida; Scottsdale, Arizona; Taipei, Taiwan; Shenzhen and Jiangsu, China; and Cambridgeshire, United Kingdom. Rent expense was $284,000 and $239,000 for the three months ended September 30, 2020 and 2019, respectively, and $832,000 and $729,000 for the nine months ended September 30, 2020 and 2019, respectively. With the Company’s recent five-year renewal of its San Diego location, the longest lease now expires in November 2025.

The future minimum lease payments required under operating leases in effect at September 30, 2020, were as follows (in thousands):

Year ending:
2020 (remaining three months)	$	202
2021		992
2022		719
2023		705
2024		686
2025		615
	$	3,919

In some agreements to which the Company is a party, the Company has agreed to indemnify the other party for certain matters, including, but not limited to, product liability and intellectual property. To date, there have been no known events or circumstances that have resulted in any material costs related to these indemnification provisions and no liabilities have been recorded in the accompanying financial statements.

In September 2020 the Company entered into a supply agreement with a vendor to purchase up to $2.0 million of inventory during the initial term of the agreement through December 31, 2022. As of September 30, 2020, no amounts had been paid under this supply agreement.