I must strongly disagree.
Hasbro is trying to revoke and claim ownership of rights that it never actually owned.
- They cannot copyright, patent or trademark game mechanics; that's settled law with cases going all the way to the top.
- They cannot copyright the rules systems in the SRD, only the verbatim text thereof, and the verbatim text of the Player's Handbook etc. And they do not need an OGL to assert proper copyright protections.
- Similarly, they do not need an OGL to assert trademark protections and associated product identity.
The OGL in all its forms is irrelevant and unenforceable; it serves only to list trademarks and product identity, which third parties need not even acknowledge as long as they don't use those trademarks. If I don't say "Mordenkainen" or "Forgotten Realms" or anything else in the list, I don't even need to admit that anyone in Hasbro still draws breath.
Has-been is claiming ownership of something that it does not, in fact, own (the rules system mechanics and the ability to publish material adhering to and compatible with the mechanics of the rules); what they are trying to do is to have third parties (including
you, Gentle Reader) to give up rights which
you own to Hasbro, without compensation. They are relying entirely upon the fear of incurring legal costs. And for that, there are laws about anticompetitive behavior, and anti-SLAPP laws,
There is no need to negotiate, and if they litigate, they have a lot more to lose than we do. Per the major investor advice site Motley Fool,
WotC accounts for only 22% of revenue but 72% of profit for Hasbro as a whole. MTG and D&D are almost 4 times as cheap to extract profit from than anything else Hasbro has, and they think this is a cheap way to squeeze even harder to support the rest of its underperforming lineup. WotC is carrying the rest of Hasbro on its back; it's as close to "free money" as can be. And Hasbro is dead set upon killing the goose that lays the golden eggs, strictly out of fear of competition that applicable law insists MUST be allowed to exist unhindered.
Specifics and sources:
You
do not need a license or permission from Hasbro to say "my product is compatible with Dungeons and Dragons." That's backed by a U.S. Supreme Court decision:
Hidden Trademark Landmines in Comparative and Compatibility Advertisements I can put out an adventure for D&D, say it's 5e-compatible, and there's not a damned thing Hasbro can do about it...
unless I, not they, say it's released under the OGL.
Hasbro
cannot copyright game mechanics, directly per the U.S. Copyright Office itself. Source:
https://upload.wikimedia.org/wikipedia/commons/9/96/U.S._Copyright_Office_fl108.pdf
Hasbro
cannot patent game mechanics. The relevant case is Baker vs. Selden 1879 (
Baker v. Selden, 101 U.S. 99 (1879)). The U.S. Supreme Court decision that held that methods of accounting were neither copyrightable nor patentable. The court ruled that a method of accounting could not be protected by copyright, because it was a system or process, and therefore not subject to copyright. The court also held that it was not patentable because it was a principle or method, and not a tangible invention. Intellectual property lawyers recognize that this is a very strong precedent for game mechanics claims.
Even were this theoretically possible, it's much too late for that. There are almost 50 years of widely established prior art and "public disclosure";
you have at most one year after disclosure to seek the patent. Even if a patent had been issued back in the 70's, the patent would have lasted only 20 years. Source:
Grace Periods for Disclosure of an Invention before Applying for a Patent
My conclusion is that Hasbro has no rights to assert any sort of ownership or control, or to demand royalties for, D&D-compatible products...
unless the third party foolishly signs a contract giving that all away, or foolishly uses something from a very limited list of trademarks in very specific ways, i.e. use of registered Hasbro logos in trade or claiming Hasbro specifically endorses the product.
I am not a lawyer. I am a GM of 45 years of experience, a software quality engineer of 30 years experience, a publisher of widely-distributed independent print-media comics, with a keen interest in intellectual property law, who does not back down to a meaningless cease-and-desist just because it's on fancy letterhead.