<div dir="ltr">Moog did uncover the offending module in their factory and sent a patent infringement nastygram to ARP. The parties were about to work on licensing to settle the matter when ARP noticed that Moog was infringing on their linear to expo converter patent in their synths. Both parties wound up with guns pointed to each others' heads before they said 'oh forget it'. No legal action was ever pursued, although ARP did discontinue any filter modules that infringed on Moog's patent which was how the 4072 and 4075 VCF modules became reality.<div><br></div><div>MC</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Sep 2, 2016 at 6:14 PM, Jason Proctor <span dir="ltr"><<a href="mailto:jason@redfish.net" target="_blank">jason@redfish.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">potting is also a way of ensuring nobody borrows your ideas, too :-)<div><br></div><div>IIRC, there was an agreement reached whereby ARP acknowledged borrowing the Moog filter, Moog acknowledged borrowing some ARP oscillator tracking tech, and both parties put it behind them and moved on.</div><div><br></div><div><br></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Sep 2, 2016 at 3:08 PM, Tom Wiltshire <span dir="ltr"><<a href="mailto:tom@electricdruid.net" target="_blank">tom@electricdruid.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I don't know how they got caught, but putting potting around something is a bit like saying "Don't look under here!", isn't it? (Then and now!)<br>
<br>
The lawsuit was threatened but never required is my understanding of it. Moog's patent was good, and ARP didn't try and contest it, so there never was any court action.<br>
<span><font color="#888888"><br>
<br>
Tom<br>
</font></span><div><div><br>
On 2 Sep 2016, at 21:02, <a href="mailto:rsdio@audiobanshee.com" target="_blank">rsdio@audiobanshee.com</a> wrote:<br>
<br>
> Hmm, if ARP hid their VCF circuit, then how did they ever get caught?<br>
><br>
> I assume that they did not actually anticipate being sued. If they did anticipate the lawsuit and then went ahead with a copyright infringement thinking that hiding it would somehow work, then it sure seems like an epic fail. Probably a ton of urban legend around this story.<br>
><br>
> Brian<br>
><br>
><br>
> On Sep 2, 2016, at 12:38 PM, Rick Jansen <<a href="mailto:rick.jansen@xs4all.nl" target="_blank">rick.jansen@xs4all.nl</a>> wrote:<br>
>> They should have left the scratching to an intern.<br>
>> Did they also scratch the resistors? Very thorough people...<br>
>> Didn't ARP put their VCF in resin to hide it was a copy of the Moog filter?<br>
>><br>
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