ExtractionTek Stainless (ETS), announced the institution of one of three inter partes review (IPRs) petition filings with the Patent Trial and Appeal Board (PTAB) at the United States Patent and Trademark Office. Institution is based on a reasonable likelihood that at least one of the claims challenged in the IPR petition is unpatentable. The institution of the first IPR starts a one-year clock for the PTAB to evaluate the claims in the patent in question and either confirm their validity or invalidate the claims and possibly the entire patent.

ETS filed the IPRs to sell their closed-loop extraction equipment to customers without fear of so-called “patent troll” retribution. Halo Collective Inc. (OTCQB: <a …

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