RE: Possible patent issue with UTCTime hack

["Tim Dierks" <timd@xxxxxxxxxxxxx>]

Patent number appears to be 5806063, filed Oct. 3, 1996. I believe there's a
lot of prior art (possibly including PKIX drafts). I wouldn't worry about it
too much.

<http://www.patents.ibm.com/details?pn=US05806063__>

Tim Dierks
VP of Engineering, Certicom
tdierks@certicom.com
510.780.5409 [Hayward] -- 905.501.3791 [Mississauga]

> -----Original Message-----
> From: marcnarc@crack.x509.com [mailto:marcnarc@crack.x509.com]On Behalf
> Of Marc Branchaud
> Sent: Tuesday, November 02, 1999 5:47 PM
> To: ietf-pkix@imc.org
> Subject: Possible patent issue with UTCTime hack
>
>
>
> It seems that McDonnell Douglas has patented the date "windowing" that is
> used to get around Y2K problems:
>
> 	http://news.cnet.com/news/0-1009-200-1426450.html
>
> Since PKIX requires windowing UTCTime in certs, this may violate
> the patent
> (note: I don't know anything about anything, especially patents).
>
> 		Marc
>