Total revenue for the third quarter of 2020 decreased $5.5 million, or 21%, to $20.7 million, compared to $26.2 million for the third quarter of 2019. Total lease revenue, from sales of systems via our subscription model, decreased $7.0 million, or 43%, to $9.4 million, compared to $16.4 million for the third quarter of 2019. Total products and services revenue for the third quarter of 2020 increased $1.5 million, or 16%, to $11.2 million, compared to $9.7 million for the third quarter of 2019.
The decrease in revenue was a result of decreased revenue in the United States of $2.3 million, or 23%, and decreased revenue in international markets of $3.2 million, or 20%. The decrease in revenue in both the United States and international markets was driven by COVID-19 related disruptions including lockdown measures or restrictions imposed by federal and state governments, a reduction in procedures at the clinic level caused by additional COVID-19 safety protocols, and a general reluctance on the part of some consumers to undergo non-essential aesthetic procedures given the risks presented by COVID-19. These disruptions and the resultant uncertainty at the clinic level negatively impacted our ability to sell into our customary channels in both the United States and international markets.
The decrease in total revenue, by product category, for the third quarter of 2020 was driven by a decrease of $7.0 million, or 43%, in lease revenue, a decrease of $0.3 million, or 23%, in service revenue, offset partially by an increase of $1.5 million, or 125%, in other products revenue, primarily ARTAS® and ARTAS iX® procedure kits and other consumables, and an increase of $0.4 million, or 6%, in system revenue. With the exception of the increase in other products revenue, the declines were attributable to aforementioned COVID-19 related disruptions that impacted our ability to sell into our customary U.S. and international markets. The percentage of systems revenue derived from our subscription model was approximately 56% in the three months ended September 30, 2020 compared to 70% in the three months ended September 30, 2019. The increase in system revenue for the third quarter of 2020 was driven by a significant contribution of revenue from the sale of ARTAS® and ARTAS iX® systems which did not contribute to system revenue in the third quarter of 2019. The increase in other product revenue was driven by sales of ARTAS procedure kits, which did not contribute to system revenue in the third quarter of 2019, partially offset by the aforementioned COVID-19 related disruptions. The decrease in service revenue for the third quarter of 2020 was driven by COVID-19 related restrictions imposed by federal, state, and local governments resulting in a decline in VeroGrafters™ technician services, along with the suspension of operations of the 2two5 marketing services, offset by additional warranty revenue on ARTAS® systems.
Gross profit for the third quarter of 2020 decreased $5.3 million, or 28%, to $13.5 million, compared to $18.8 million for the third quarter of 2019. The decrease in gross profit is primarily due to lower revenues caused by the aforementioned COVID-19 related disruptions in countries and markets in which the Company operates. Gross margin was 65.3% of revenue for the third quarter of 2020, compared to 71.8% of revenue for the third quarter of 2019. The decrease in gross margin is primarily related to changes in revenue mix, specifically, the strong sales of our robotic ARTAS® systems in the third quarter of 2020, which were sold at slightly lower margins than our other systems.
Operating expenses for the third quarter of 2020 decreased $6.5 million, or 26%, to $18.8 million, compared to $25.3 million for the third quarter of 2019. The year-over-year decrease in operating expenses was primarily driven by a decrease of $3.5 million, or 39%, in sales and marketing expenses and a decrease of $3.2 million, or 22%, in general & administrative expenses, partially offset by a $0.2 million increase in R&D expenses or 10%. In the third quarter of 2020, the Company realized $7.0 million, of the projected $20.0 million for full fiscal year 2020, in cost savings from the new restructuring program in response to the challenging business environment from COVID-19, which was previously announced.
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