<div dir="auto">And to be clear, I don\u2019t offer this as a statement in favor or defense of the equivalent clause in the new license draft, which I haven\u2019t read. Simply interpreting MPL 2 and offering the rationale. </div><div dir="auto"><br></div><div dir="auto">I think it\u2019s obvious that the rationale plays out differently in this new fact pattern, but how that should play out for OSI analysis I have not given much thought to.<br></div><div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, Aug 14, 2026 at 6:36\u202fAM Luis Villa <<a href="mailto:luis@lu.is">luis@lu.is</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">MPL 2.0\u2019s defensive clause terminates copyright grants specifically because the patent grant is often such a toothless remedy.</div><div dir="auto"><br></div><div dir="auto">A major software company (and frequent patent litigator) told us that they\u2019d never ship MPL 2 software because of that, which we counted as a win.</div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Aug 14, 2026 at 4:28\u202fAM David Rudin <David@foundational.law> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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The copyright termination remedy has precedent in specification licensing. The OWF agreements have carried it since 2009, the Community Specification License since 2020. Admittedly, both are specification agreements and were never submitted for OSI approval.</div>
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OWFa 1.0 § 3.1.2.1 \u2014 and 0.9 before it \u2014 terminates "all rights, grants, and promises made by me to you under this Agreement." Not under Section 3, but under the Agreement, and § 2.1 is the copyright grant. The FAQ is explicit: the signer's promises not to
assert its Granted Claims "and its copyrights" terminate; "defensive termination only means that the patent and copyright licenses terminate" (Q16). The copyright license is given irrevocably "except for defensive purposes" (Q3).</div>
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The CSL carries it forward. The copyright license is irrevocable "except as expressly stated in this License" (§ 1.1), and the express statement is the defensive termination clause, which terminates "any licenses granted under this License" (§ 2.1.4).</div>
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The reasoning is that an instrument covering one body of material under several overlapping IP regimes is granting one IP bargain, not a group of individual bargains based on distinct IP regimes. If the remedy reaches only patents, a licensee can assert copyright
in the materials it received and keep its copyright license to those same materials. Closing that asymmetry is the point.</div>
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David</div>
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