at that point
At a particular moment in the past. At that point, we were the best ranked football team in the country—but then we went on a 10-game losing streak.
at that point
Also, at that point in time. Then, as in At that point we had finished the first batch of cookies and begun the second. This phrase refers to a particular time when an event or circumstance occurred, as opposed to "now" (see at this point). [Second half of 1900s]