1) Before filing FIR and case against them first check the partnership agreement which was signed by your father and what was terms and conditions for deceased partner, whether the legal heirs of deceased partner are entitled to join as partner in this partnership firm.

Do let me what the partnership agreement says

1) If the there was a clause after death of any partner thn dissolution of partnership firm should be done.

2)  Once dissolution whether it mentioned that profit sharing till date and IPR of partnership along with goodwill can be used new company and what about the legal heirs of death partner permission. 

3) Are Death partners legal heirs are entitled for Partnership Dissolution procedure.

Section 46 of the Partnership Act. lays down that on tile dissolution of a firm every partner or his representative is entitled as against alia other partners or their representatives to have the property of the firm applied in payment of the debts and liabilities of the firm and to have the surplus distributed among the partners or their representatives according to their rights. This provision has to be strictly followed when the firm is dissolved but the principle lying under this provision has also to be followed where the firm is not to be dissolved and share of the outgoing partner is to be determ,ined

2) On the dissolution of a firm, all the properties belonging to the partnership have to be sold and the sale proceeds after discharging all the partnership debts liabilities, have to be divided among the partners according to their respective shares, and this is the general rule.

3)legal heirs of deceased partner have to file suit for rendition of accounts of the firm

4) also seek injunction restraining new firm from carrying on business in name of old firm

Dear sir, yes you should file a case against them in the NCLT for the fact that your express consent has not been taken to enter into the contract, and without your consent the contract predominantly looms illegal for want of consent. Since the partnership firm has to move along with all the partners for the partnership firm to enter into the contract. Kindly submit the complaint in this regard as well

You can bring into notice to the company that the contract entered by the firm with the company is illegal because the firm has not been authorised by you to carry on the business on your share of property without your express consent as you were the legal hier to the partnership if only it was provided in the partnership deed. If yes then you have the right in law to make or intitiate legal proceesing againt the partners or directors of the firm in which your father was a partner. 

You can inform the company and can further file a suit for your share in same and can seek injunction on the firm to transfer asset or carry on business.

Hi,

You may first issue notice to the firm for doing the rightly and if they are not acting accordingly, file the case of specific relief. You may also file application to the registrar's of the firm regarding alleged acts of the remaining partners.   

Yes you can serve the legal notice to them and can inform them the same. You can also give public notice for the same

As a legal heir to your deceased father you are entitled to claim his share and rights in the firm.

You can file a suit seeking his share in the partnership firm and also can file an application seeking to restrain the company from carrying out any business till the disposal of this suit 

You can follow up the criminal case also properly.

You need to approach civil court along with stay and discovery application seeking relief for your share and seeking interim stay on transfer of firm asset name business. The arbitration clause has to be studied if it is there and court can refer the matter to arbitrator for same.

File suit for dissolution of firm and remediation of accounts 

2) legal fees vary depending upon lawyer engaged by you 

3) court fees depend upon reliefs claimed in suit 

4) if there is arbitration clause in partnership deed disputes woukd be referred to arbitration 

Yes it's better to file the suit and take injunction orders as aforesaid

As per section 43 of Indian partnership act, 1932:

1. Dissolution by notice of partnership at will

1. Where the partnership is at will, the firm may be dissolved by any partner giving notice in writing to all the other partners of his intention to dissolve the firm.
2. The firm is dissolved as from the date mentioned in the notice as the date of dissolution or, if no date is so mentioned, as from the date of the communication of the notice.

However since your father has died and you are claiming his share in the firm you may have to check if you can file an application for dissolution of the partnership firm as a legal heir.

You may seek other reliefs what you have mentioned thorough civil as well as criminal laws.

You may take the assistance of a lawyer for all such further issues.