On April 24, 2018, the US International Trade Commission (ITC) published in the Federal Register a summary of ITC practice relating to administrative protective orders (“APOs”). Since February 1991, the ITC has published in the Federal Register reports on the status of its practice with respect to violations of its APOs under title VII of the Tariff Act of 1930, in response to a direction contained in the Conference Report to the Customs and Trade Act of 1990. Over time, the ITC has added to its report discussions of APO breaches in ITC proceedings other than under title VII and violations of the ITC’s rules including the rule on bracketing business proprietary information (“BPI”) (the “24-hour rule”). This notice provides a summary of breach investigations (APOB investigations) completed during calendar year 2016. This summary addresses two APOB investigation related to proceedings under title VII of the Tariff Act of 1930 and seven APOB investigations related to proceedings under section 337 of the Tariff Act of 1930, two of which were combined and which were related to the same proceedings under section 337. The ITC investigated rules violations as part of two of the APOB investigations. The ITC intends that this report inform representatives of parties to ITC proceedings as to some specific types of APO breaches encountered by the ITC and the corresponding types of actions it has taken.