The Company’s industry is characterized by frequent claims and litigation, including claims regarding intellectual property and product liability. As a result, the Company may be subject to various legal proceedings from time to time. The results of any current or future litigation cannot be predicted with certainty, and regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs, diversion of management resources and other factors. Any current litigation is considered immaterial and counter claims have been assessed as remote.

The following is a summary of the Company’s general product warranty liability. Product warranty liabilities of approximately $93,000 and $27,000 were included in accrued liabilities and other non-current liabilities, respectively, in the accompanying condensed consolidated balance sheets as of September 30, 2021. Expense relating to the recording of this reserve is recorded in cost of product and product-related services revenue within the accompanying condensed consolidated statements of operations.

	Nine Months Ended September 30,
	2021			2020
Beginning balance	$	92,696		$	94,482
Cost of warranty claims		(141,648	)		(19,310	)
Increase in warranty reserve		169,337			12,423
Ending balance	$	120,385		$	87,595