Yes. For corporations, this is in fact what's normally done.
Insanity
NO!Unless you are an attorney licensed to practice law and has the client permission, or you have a POA (power of attorney)to do such a thing on behalf of a caretaker you cannot sign anything on somebody behalf.
Yes, an attorney can invoke Miranda rights on behalf of their client during police questioning to ensure that the client's rights are protected.
Any person who provides professional services to an attorney on behalf of a client becomes bound by the same privilege as the attorney, and may not breach that confidentiality without the permission of the client.
Insanity. The M'Naughten rule was named after him.
No, there is not. Even if the client is guilty, an attorney can defend you. However, the attorney cannot break the law in the process.
Any expense that the attorney incurred on the client's behalf. This often includes travel costs, filing fees and court costs, copying charges, investigative expenses, etc.
No, that followed legal process...but you may have recourse for damages against the attorney.
Attorney-client privilege does not apply to the identity of the client.
If they authorized the attorney to act on their behalf, yes. But they have no requirement to sign the agreement once it has been negotiated, but there may be issues if there was a good faith arrangement.
It depends on the document and the surrounding facts. In most cases no. But it can be foreseen where Court orders it, or the issue is a dispute regarding payment of the attorney and a contract authorizes the attorney to sign. The lawyer has a duty to act in the client's best interests. Generally if the client is saying don't sign something and the lawyer disagrees, the lawyer's duty is to persuade the client or, if necessary to avoid doing something else unethical or illegal, withdraw. Now, keep in mind that if a lawyer signs a document on a client's behalf without the clients actual consent, the other party to the agreement may be able to hold the client to it due to the apparent authority the attorney had. An attorney acts as an agent for his client, if he signs an agreement on your behalf, it may be enforceable against you if it appeared to the other side that he had authority to sign and that he/the client had the ability to fulfill the agreement.
An 'entry of appearance' is a formal notification to the court by an attorney who is announcing his appearance on the behalf of his client. The 'waiver' could apply to most anything but in association with the 'entry' notice it could signify that the attorney and client waive (voluntarily surrender) a formal reading of the charge(s).