On May 6, 2016 TSDR will update the XML schema from version ST-96 1_D3 to version ST-96 2.2.1. Consequently, 3rd party applications that utilize TSDR XML may not function as intended after that date. Therefore, the USPTO will make available the current XML schema at the following link: https://tsdrsec.uspto.gov/ts/cd/casestatus/SERIAL_OR_REG_NUMBER/v1/info.xml <p>for a period of not less than 6 months. Any 3rd party applications that currently make calls to USPTO XML should be changed to point to that link.<p>It is highly recommended that 3rd party applications be upgraded to utilize the USPTO API’s rather than the XML schema, which may change at any time rendering the 3rd party application inoperable. The link to the current API is https://tsdrapi.uspto.gov/ts/cd/casestatus/SERIAL OR_REG_NUMBER/info.xml. Questions may be directed to <a href="mailto: firstname.lastname@example.org">the TSDR Mailbox</a>.