Is Quran or Tawareeh of Ramzan or Eid Milad is Biddah ?
Yes Quran was not formed as book in time of Beloved Prophet Sal-lal-lahu alaihi wa sallam. So What we have Quran in the form of book is a biddah but biddat e hassan ( good biddah )
Similarly Tarawih / Eid meelad celebration is Good Biddah ( Biddat-e-Hassana which are not against Shariah or sunnah )
Some Non-Sunni Scholars / Groups are misguiding the ummah by making this a big issue.
Remembering this great islam Day and even celebrating / Commerating this day / with the love and respect of Beloved Prophet ( Sal-lal-lahu Alaihi Wa Sallam ) is Permissible.
Remember Esaal e Sawab and Sadaqah or Spending in the name of Beloved Prophet ( Sal-lal-lahu Alaihi Wa Sallam ) is Permissible in Islam
Jumah is known as the Eid of Momins because of the birth of Hazrat Adam Alaihi Salaam.
Therefore Eid Milad is the birth day of Beloved Prophet ( Sal-lal-lahu Alaihi Wa Sallam ) which celebrated with Love and Respect of the beloved Prophet ( Sal-lal-lahu alaihi Wa Sallam ) and this is not against Shariah or Sunnah.