Only if it's within the statute of limitations.
See answer to related question, "Can a tenant sue a landlord for trespass?"
The landlord could sue the decedent's estate.
Yes. The tenant should be considered the landlord of the sub-tenant. Therefore, he can evict, just like any landlord.
Right after the tenant has moved out, if the landlord has his case ready. There is no waiting period, but the statute of limitations limits the amount of time the landlord has to file the lawsuit.
The landlord must prepare the unit for rent as he would if the tenant moved out. In some states, if a tenant dies in the unit of a homicide or suicide, or was found in advanced decomp, the Landlord must state this to the potential tenant if such death occurred within the past eighteen months before any tenants move in, or the tenant can break the lease and sue the landlord for omission of a material fact.
Yes, a landlord in Maryland can sue for future rent if the tenant breaks the lease agreement. However, the landlord has a duty to mitigate damages by making reasonable efforts to find a new tenant. If the landlord finds a new tenant, the tenant who broke the lease agreement will only be responsible for the rent until the new tenant moves in.
I can't answer definitely without more information. Basically, if the tenant did something wrong, then the landlord may very well be in a position to sue to be compensated for this wrong.
Landlord can keep deposit and sue tenant's estate if damages to the apartment was done outside of normal wear and tear.
If the tenant's health issues are caused by the landlord's violation of health and building codes, then the tenant can sue the landlord. The landlord's insurance would normally get involved at this point, as opposed to being sued directly. If the tenant has special health needs that the landlord isn't meeting, then too bad, move. As long as the health and building codes are being complied with, tenants cannot force a landlord to take extraordinary measures.
It depends. If the sub-tenant was there by right and the landlord allowed a sub-lease, then that's a situation where nothing has gone wrong. If the landlord is suing, it sounds instead like the tenant did not have the right to sublet and in that case they are responsible to complete the lease and the sub-tenant may not have had the right to be there.
The tenant owes the rent to the landlord up the day of a foreclosure sale.
You may have given a security deposit when you moved in and that may be kept if it can be shown that you damaged the floor. If you feel it is not justified, you can go to small claims court and sue the landlord for it. If there is no security deposit, the landlord can try and make you replace it, but his only real option is to sue you for it. Most will not go to the trouble.