Substantial doubt about the company's ability to continue as a going concern.

“due to the consideration of certain qualitative factors, including the Company's recurring losses from operations incurred since inception, the expectation of continuing operating losses for the foreseeable future, and uncertainty around its ability to successfully realize the full value of its intellectual property estate and other assets, the Company has concluded that there is substantial doubt regarding the Company's ability to continue as a going concern within one year after the date that these condensed consolidated financial statements are issued.”