Grammar
N2AI-drafted〜とはいえ
although; even though; that said
Formation
普通形 + とはいえ / N・な形容詞語幹 + とはいえ
Usage
Used when the speaker acknowledges a fact and then says the expected consequence does not really follow. It is a written, somewhat formal expression, frequent in essays, news and speeches, and can also start a sentence as 'とはいえ、…' meaning 'that said, …'. Unlike 〜としても, which supposes something hypothetical, 〜とはいえ takes something already established as true.
Examples
春とはいえ、まだ風が冷たい。
はるとはいえ、まだかぜがつめたい。
Although it's spring, the wind is still cold.
仕事に慣れたとはいえ、まだ失敗が多い。
しごとになれたとはいえ、まだしっぱいがおおい。
Even though I've gotten used to the job, I still make a lot of mistakes.
景気は回復しつつある。とはいえ、油断はできない。
けいきはかいふくしつつある。とはいえ、ゆだんはできない。
The economy is recovering. That said, we can't let our guard down.