<blockquote style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;" class="gmail_quote">Not all the relevant patents are listed in the ITU database, so<br>
there might be further problematic ones, which won't expire until 2016.<br>
<br>
The bottom line seems to be that it will be something like 2015 or 2016<br>
before the G.729. G.729A and G.729B specs are in the clear.<br></blockquote><br>Damn, there I was looking forward to next year... :(<br><br>-Steve<br><br><br><br><div class="gmail_quote">On 25 September 2011 17:34, Steve Underwood <span dir="ltr"><<a href="mailto:steveu@coppice.org">steveu@coppice.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">That's a good question. Many of the patents listed in the ITU database<br>
have already expired. I think the last one in the ITU database to expire<br>
will be some time in 2016, so its pretty much 20 years after the spec<br>
was first published - i.e. people were patenting techniques used by the<br>
codec until close to its publication data. One or two of those final<br>
patents might be things you could design your way around. G.729A was<br>
published a little later, but I don't remember any patents specific to<br>
it. Not all the relevant patents are listed in the ITU database, so<br>
there might be further problematic ones, which won't expire until 2016.<br>
<br>
The bottom line seems to be that it will be something like 2015 or 2016<br>
before the G.729. G.729A and G.729B specs are in the clear.<br>
<font color="#888888"><br>
Steve<br>
</font><div><div></div><div class="h5"><br>
<br>
On 09/25/2011 10:44 PM, curriegrad2004 wrote:<br>
> Steve, do you know around what year when the G.729 patents expire?<br>
><br>
> On Sun, Sep 25, 2011 at 3:27 AM, Steve Underwood<<a href="mailto:steveu@coppice.org">steveu@coppice.org</a>> wrote:<br>
>> Hi,<br>
>><br>
>> On 09/23/2011 12:42 AM, curriegrad2004 wrote:<br>
>>> There is no G729 trial codecs in FreeSWITCH. You need to pay royalties<br>
>>> to SIPPRO regardless. There's always the option of waiting until<br>
>>> somewhere 2014 for the patents to expire ;)<br>
>>><br>
>> The last of the G.723.1 patents expires in 2014. There are G.729 patents<br>
>> running a bit longer than that, but its hard to find the exact date.<br>
>><br>
>> Steve<br>
<br>
<br>
<br>
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