Did you notice that these 20 companies changed their logos this year?

When executed well, a new logo can inject life into a company and drive a new wave of sales and brand loyalty.

When executed poorly, a new logo can be the cringe-worthy mark of a brand's decline.

There have been some significant brand overhauls this year, from Google to IHOP. Flat, sans-serif logos have been in vogue for the past few years and this year is no different, though for the most part there is simultaneously a recognizable trend of being respectful of a brand's heritage.

We took a look through the graphic design publisher UnderConsideration's excellent Brand New blog to find how some of the most recognizable brands worked with design agencies to change their logos this year.