Partition deed challenge

My Grandfather has passed away in the year of 2016 and he had 3 sons and 4 daughters. He had around 30 acres of land in the village. When my father and uncles had decided to divide in year of 1998 every one got the 10 acres each on which my father got 10 of patta (own land as per documents) land. My uncles got 5 acres patta and 5 acres non patta land. All these days they were happy in earning from the land what they have got. In the year of 2004 my Grandfather made an WILL(Register in register office) the saying that everyone should follow the existing agreement which was made at home in the year of 1998 until. In the year 2016 they gone to registered office and did the partition deed and got registered their Patta land. All 3 sons and 4 daughters has been signed to the partition deed. But now one of my uncle has gone to the court saying that I did not got the equal share of property mentioning that I have only 5 (excluding patta land) acres land where as my brother( my father) having 10 land and he is asking need equal share of 1/7 including 4 daughters. Please suggest me shall I get justice in court or better to settle out of the court?