I am not a big fan of your books clearly. I am a big fan of English movie and Politics of India. I am concerned with lot of Indians who are upset from the system called Indian politics and parts running under it.( Thats right I am just another Indian)
Till now I clearly see you as a businessman who sells books which he writes for fun!.Your books are demeaning to educated (or education taking girls) and supports to grow filthiness amongst youngster by telling them "how to use education as a shield of sex? "
Now, As my oath to help Indians Let me help you by following :-
This is what brought you in mess. You think you are PRO writer (language wise its true but legality wise it is not).
4-a) If you want credit of Movie you should have gone to Censer board when Script and Story were passed by writer.
4-b) You should have clearly mentioned your share of credit either in terms of money or in terms of placing the name of book or author.
4-c) Patent of FPS is under Author Suppression Act. Which means "Writing Publishing Edited Writing and Edited publishing is prohibited.. . .No Claw Regarding making movie on it.
If you File a case your weak points will be :-
A) Your weak patent. ( 4-C )
B) You came late to take story credit.
C) Still if Court takes your case then your FPS patent has patents of
i) "Names of Characters" : 15%
ii) "Scenario and Be ground lines" : 30%
iii) "Exciting Scenes " : 15%
iv) " Name of Patent Objection" : 10%
v)" Story line " : 30%
So, C-i,C-iii,C-iv are not in your favor i.e totally 40% is not stolen from you. Also I am not including (C-iii) as I am not sure they have shown the "Neha with top off! " of your book in movie. Still your opponents get 40% not copied.
Law says : If book is copied for more then 75% then its copyright infringement case. Name of Characters and Story line have very much details which can be removed by placing the following para in movie
" Any and all names, characters, pictures, scenes, places, locations, locales, business establishments, organizations, associations, groups, entities, dominions, states, nations, governments, beliefs, circumstances, conditions, and events portrayed in this movie are either fictitious or fictitiously used. Any resemblance to real or actual person (living or dead) are pure coincidence. Any resemblance to real or actual character, characters, picture, pictures, scene, scenes, place, places, location, locations, locale, locales, business establishment, business establishments, organization, organizations, association, associations, group, groups, entity, entities, dominion, dominions, state, states, nation, nations, government, governments, belief, beliefs, circumstance, circumstances, condition, conditions, event, or events that exist, exists, existed, have existed, or will exist are pure coincidence. Any resemblance to reality is pure coincidence."
Now you have only 60% true hold (out of which 30% more can be taken if you take "exciting scene and turning points " ).
As far as " court outside settlement " is concerned , I know you are a good business man and you have good hold in International market you will come to draft some rout out.
Also I would like to suggest that "be legally strong for books you wrote".