Patent Writing - Description Part Options

[totifern]

Hi, im new in this forum.

We have developed a new device (device A). Basically this device has many possible variations and combinations with novel or existing-art features, most of which we have already explored and tested. Aside from the devise itself, we would like to protect some uses, variations and combinations we have discovered.

We are leery of disclosing our invention to a patent lawyer or any other party in my country. As I understant the patent laws here in the Philippines are similar to the USA, but enforcement here is something else. We are afraid that if I disclose it to other parties it might get copied and somebody else gets the patent rights to the invention.
So we decided to write the patent ourselves.

MY FIRST QUESTION:
If I my claims are as follows: Claim1: Device A with feature B ; Claim2: Device A with feature C (B and C are not alternatives, but refer to different improvements of the device); now can another party separately patent device A featuring both A and B?

MY SECOND QUESTION:
Can we write the description is an independent-dependent format like in the claim, such as follows (abreviated as outline):

Embodiment 1: Decribing device A
Embodiment 2: "Per Emb 1", wherein it cotains B( detailed description)
Embodiment 3: "Per Emb 2", wherein B uses C (detailed description)
Embodiment 4: "Per Emb 3", wherein C has a feature D (detailed description)
Embodiment 5: "Per Emb 4", wherein D is used in the way of E (detailed description)
And so on.
Basically it might contain several threads as above.

MY THIRD QUESTION:
Is there a limit to the number of layers of claim dependency?

We would greatly appreciate receiving opinions on the above. At present we are stumped on this part.

Thanks in advance.

Toti

[CriterionD]

You are better off asking these questions in a community geared more towards attorneys than inventors