Blanket Jackson , Michael Jackson’s youngest son, has filed a lawsuit against his grandmother, Katherine Jackson. The 22-year-old is suing the matriarch for a legal injunction. In his request, Blanket wants the court to prevent Katherine from using his father’s estate to fund a previous lawsuit. An injunction, according to Justia , is a writ or decree compelling someone to abstain from doing something specific. It can be granted by a judge of that court or by the court where the case is filed, and if a judge grants it, it can be enforced as a court order. The court case documented a smooth relationship between Blanket and his grandmother. The objections on Monday bring to light a recent disagreement between the two. Previously, both Katherine and Blanket opposed co-executors John Branca and John McClain selling off a large portion of MJ’s catalog. Katherine previously told a court her son would never want his catalog sold. Her memory of MJ is that he called his music “his lifeline.”...