WoTC legal are well aware of OSRIC; Stuart Marshall the author has been in conversation with them about it back in 2006. They didn't threaten to sue him. Nor did they give him authorisation.
FWIW, I teach copyright and contract law, I have looked at OSRIC, and it seems very tightly designed so as not to infringe copyright or breach the OGL. Other retroclones may have minor, technical or trivial copyright infringements of non-OGL material (which BTW would not necessarily lead a judge to award damages or injunction, at least in UK law), but OSRIC looks watertight to me. I don't think Orcus can have looked at it carefully in terms of the OGL and copyright when he made his statement.
My impression is that the author of OSRIC is a serious person, WoTC would be ill advised to bring a lawsuit against him that would probably fail (note he's in the UK and our law is not as plaintiff friendly as US law) and set an unwelcome precedent for him. And WoTC/Hasbro legal are not idiots like the TSR in-house lawyers, they know this too. Where they have taken action, it has been for file-sharing or for trademark infringement, both of which are much simpler to litigate than OGL/copyright. The OGL was specifically designed to prevent WoTC lawyers suing people, IMO no smart lawyer is going to want to go in for an OGL lawsuit except where there has been trade mark use by the OGL licensee.
FWIW, I teach copyright and contract law, I have looked at OSRIC, and it seems very tightly designed so as not to infringe copyright or breach the OGL. Other retroclones may have minor, technical or trivial copyright infringements of non-OGL material (which BTW would not necessarily lead a judge to award damages or injunction, at least in UK law), but OSRIC looks watertight to me. I don't think Orcus can have looked at it carefully in terms of the OGL and copyright when he made his statement.
My impression is that the author of OSRIC is a serious person, WoTC would be ill advised to bring a lawsuit against him that would probably fail (note he's in the UK and our law is not as plaintiff friendly as US law) and set an unwelcome precedent for him. And WoTC/Hasbro legal are not idiots like the TSR in-house lawyers, they know this too. Where they have taken action, it has been for file-sharing or for trademark infringement, both of which are much simpler to litigate than OGL/copyright. The OGL was specifically designed to prevent WoTC lawyers suing people, IMO no smart lawyer is going to want to go in for an OGL lawsuit except where there has been trade mark use by the OGL licensee.