How is paper C be structured and what do I have to take into account when answering it?

In C1, you will be provided with a letter from a client, prior-art documents, a description of the patent to be opposed and some of its claims. Within the allotted time, you will be required to draft as much of a notice of opposition as possible based on the documents at hand. This first part of the notice of opposition must be handed in at the end of C1.

In C2, you will be provided with one or more additional claims of the same patent. You may also receive further information such as another letter from the client, further prior art and/or supplementary parts of the patent's description. You will be required to draft a second part of the notice of opposition, which will form, together with the first part you already provided, the complete notice of opposition which will be marked. This second part of the notice of opposition must be handed in at the end of C2.

If an attack which is available in C1 is discussed only during the C2, no marks will be awarded to that attack.