Posts Tagged: "laches"

Equitable Estoppel Requires Claim Scope Sufficiently Similar to Earlier Claims

Equitable estoppel does not bar assertion of patent claims later amended by reexamination when those new claims differ in scope from earlier claims in the patent that were not asserted. Thus, a defendant’s reliance on a patentee’s knowing silence and failure to enforce an earlier patent does not shield him from allegations of infringing later-issued claims of different scope.

The Year in Patents: The Top 10 Patent Stories from 2017

It is that time once again when we look back on the previous year in preparation to close the final chapter of 2017 in order move fresh into the year ahead. 2017 was a busy year in the patent world, although change was not as cataclysmic as it had been in past years, such as 2012 when the PTAB and post grant challenges began, in 2013 when AIA first to file rules went into effect, or in 2014 when the Supreme Court decided Alice v. CLS Bank. It was, nevertheless, still an interesting year… To come up with the list below I’ve reviewed all of our patent articles, and have come up with these top 10 patent stories for 2017. They appear in chronological order as they happened throughout the year.

Equitable Estoppel After the Loss of Laches from SCA v. First Quality

Equitable estoppel may be appropriate for the defendant in SCA v. First Quality since the plaintiff was silent for years after the defendant asserted invalidity (possibly fulfilling the misleading conduct through inaction and reliance on that conduct). But can equitable estoppel be relied upon as a defense against a dormant plaintiff in the example illustrated above? Below, we consider the two elements of equitable estoppel that replace the unreasonable delay element of laches: misleading conduct and reliance.

End of Laches Might Increase Declaratory Judgment Actions

Without laches, accused infringers might more frequently invoke declaratory judgment to clear their products and services upfront rather than tolerate a looming threat of suit for years…. The Supreme Court’s recent decision in SCA Hygiene Products Aktiebolag v. First Quality Baby Products, LLC (Mar. 21, 2017) eliminated the equitable defense of laches in patent cases.  While time will reveal the impact of the SCA decision, elimination of laches, an equitable defense against “unreasonable, prejudicial delay in commencing suit,” Id. at 3 (citing Petrella v. Metro-Goldwyn-Mayer, Inc.(2014), provides greater security to patent owners who assert claims several years after discovering potential infringement.  Conversely, the decision removes one shield—albeit a relatively modest shield—from the accused infringer’s armament of potential defenses. 

Estoppel: The Equitable Defense Remaining After SCA Hygiene Products?*

The remaining vitality of estoppel as a defense against patent infringement after SCA Hygiene Products is also not a hypothetical question. Indeed, the issue of estoppel remains very much “alive and well” in SCA Hygiene Products. Besides laches, the accused infringer in SCA Hygiene Products, First Quality Baby Products, had moved (not surprisingly) for summary judgment based upon an estoppel defense, which was also granted by the district court. Also not too surprisingly, that portion of the ruling by the district court was reversed and remanded by the Federal Circuit panel on the ground that there were “genuine issues of material fact” to be resolved. The Federal Circuit majority in its en banc ruling also reinstated and preserved the Federal Circuit panel’s reversal and remand of the district court’s grant of summary judgment on the estoppel defense. Finally, in footnote 2, SCOTUS’ decision in SCA Hygiene Products expressly states: “We do not address the Federal Circuit’s reversal of the District Court’s equitable estoppel holding.”