Well I've been experimenting a bit with an application where there was this problem.
In this application, the specification was the problem. You can relativly easily identify the culprit document by removing all except one and looking at the validation messages, and then add all other oduments one by one until the annex F noncompliant document turns up.
I have downloaded a different pdf writer, actually the one recommended on the USPTO website for their e-filing, ABXPDFWriter.
you can find this program here:
http://www.uspto.gov/ebc/portal/efs/too ... writer.htm
the created with this program, in contradistinction with the Amyuni pdf, does not generate an Annex F problem...
So I compared the properties of both pdf files and came up (besides the obvious like file name and creating program differences): with the following differences:
Amyuni:
Size: 82 kb
Document ID: something...
Page width & height: 595 x 841
Embedded objects: 56
ImageElements: Yes (Imagecount: 0 though?!?)
Colourscheme: Gray
Embedded Fonts: MEAYLN + CourierNew+ MEAYLN + CourierNew,Bold + Symbol
ABXPDF:
Size:
62 kb
Document ID: nothing
Page width & height: 595 x 84
2
Embedded objects:
77
ImageElements: No
Colourscheme: nothing
Embedded Fonts: nothing
So my guess is it's either the Grayscale scheme or the embedded fonts that do the damage...
I can't really guarantee that the ABX produced pdfs are compliant with any other requirements though...