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Xref: sserve comp.org.eff.talk:9098 comp.unix.bsd:5318 comp.os.mach:2170 misc.int-property:530 Path: sserve!manuel!munnari.oz.au!sgiblab!darwin.sura.net!haven.umd.edu!uunet!aria!dumbcat!marc From: marc@dumbcat.sf.ca.us (Marco S Hyman) Newsgroups: comp.org.eff.talk,comp.unix.bsd,comp.os.mach,misc.int-property,alt.suit.att-bsdi Subject: Modem patents (was: Re: Are you sure UNIX is a trade mark?) Message-ID: <1992Sep19.062918.12765@dumbcat.sf.ca.us> Date: 19 Sep 92 06:29:18 GMT References: <4093@novavax.UUCP> <157884@mbf.UUCP> <7fYm02RV22ak01@JUTS.ccc.amdahl.com> Organization: MSH Software, Hayward, CA Lines: 17 In article <7fYm02RV22ak01@JUTS.ccc.amdahl.com> tpa10@JUTS.ccc.amdahl.com (Thomas P. Anderson) writes: > In article <157884@mbf.UUCP> fmt@mbf.UUCP (Mike Trimberger) writes: > ...much deleted... > >(*) AT&T is a modem reset command. > /\/\/\/\/\ > But the real question is: is the "Hayes command set" protected by some > patent/copyright/knuckle-buster? The command set, no. However, BIZCOMP (remember them) had a patent on the +++ escape sequence (which I believe was finally held to be invalid). Hayes does have a patent on the pause before and after the +++. Hayes has gone to court over this patent many times and, to the best of my recollection, has always won. I don't believe they always started the litigation. // marc -- marc@dumbcat.sf.ca.us -- pacbell!dumbcat!marc