anyone able to advise please

Hi ......

I use Firefox and was wondering why I am unable to open some links? I get this message:

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Forbidden

You don't have permission to access /phosita/archives/2005/04/patent_trolling.html on this server.

Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.

Apache/1.3.37 Server at www.okpatents.com Port 80
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I appreciate any advice given, that I could try.

TIA

dj