Anavex Life Sciences Corp (AVXL)

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"Patents, Trademarks and Intellectual Property

Anavex holds ownership or exclusive rights to three issued U.S. patent and eight U.S. patent applications with various international counterpart applications, all of which relate to drug candidates and methods associated therewith. The most recent U.S. patent application was filed in November, 2016. We regard patents and other intellectual property rights as corporate assets. Accordingly, we attempt to optimize the value of intellectual property in developing our business strategy including the selective development, protection, and exploitation of our intellectual property rights."

The above is from page 6 of the 10k Anavex Annual report. NOTE THAT THE MOST RECENT PATENT APPLICATION WAS FILED NOVEMBER 16, 2016! What is this patent about?