Fans and entrepreneurs are running with The Post’s “18-1” – creating memorabilia to celebrate the Giants’ upset victory in Sunday’s Super Bowl over New England.

On Thursday, The Post filed trademark application No. 77385477 for the term “18-1” after learning the Patriots attempted to trademark “19-0” and “19-0 The Perfect Season” weeks before Super Bowl XLII.

“Nobody’s perfect,” quipped Giant spokesman Pat Hanlon on the explosion of celebratory gear.

Now plenty of others are seeing the wisdom – and fun – of such an immortal slogan of victory that forever corrects the Patriots’ premature attempt to write history.

“When [the Patriots] filed the trademark, I heard about it in The New York Post. I thought that’s enough to make the New York Giants win the game, and I filed my own trademark,” said Curtis Lyons, a Jackson, Miss.-based Web designer who unveiled his own line of celebratory wear.

His shirts – the slogan “19-0 The Perfect Season” with a bold “OOPS” stamped underneath – are selling briskly on his Web said, he said.

Derek Payne, 28, of Pittsburgh, designed a line of “18-1” shirts that are being sold on zazzle.com.

On his shirts, the numeral 1 is replaced with a graphic of a hand flipping the bird.

“I’m a Steeler fan, so I’ll give the Pats the middle finger as much as anybody,” he said. “I was definitely cheering for the New York Giants as they knocked the Pats off their perch last night.”

As long as these souvenir sellers do not brand their T-shirts as “18-1,” they will likely not run afoul of The Post’s pending trademark application, according to independent intellectual-property attorney Milord Keshishian.

Other homemade victory tees include “Belichick” and “Belicheat” – the latter a reference to spy-scandal Patriot coach Bill Belichick – along with “18*-1 – Giants 17 Cheaters 14.” With Barry Petchesky