The New York Times has a fascinating piece on the geometries of various types of pastas from a recently released book called âPasta by Design,â by architect George L. Legendre.
A sample of Agnolotti is reproduced below:
IP Protection for Pasta
There are a vast number of patents which protect apparatus for making pasta, various improvements to dehydrated food compositions etc.  The geometry/shape of pasta may be protected via a design registration.
In Australia, it is possible to protect the geometry/shape of pasta though a design registration (provided that the shape is new and distinctive).
Kraft Foods have filed a number of design registrations, as has Australia’s own Ken Done: