Patent ID: 8875985

Claim:
A reusable envelope that can be mailed a first time and then converted to a smaller envelope that can be mailed a second time, said reusable envelope comprising: a front panel having first and third side seams extending from said front panel and defining opposed sides of said front panel; a back panel separated from said front panel and rigidly adhered to said front panel through said first, and third side seams, and a second side seam between said front panel and said back panel and extending between said first and third side seams, said first, second and third side seams and said front and back panels defining a pocket; said first and third side seams extending from said front panel and folded with respect to said front panel to thereby define outer distal sides of said pocket; a seal flap rigidly adhered to a first one of said front and back panels and having an adhesive operative to bond said flap to a second one of said front and back panels and thereby enclose and seal said pocket; and at least one perforation in each of said front panel and said back panel defining a return envelope border comprising a portion of said front panel less than the entire front panel and a portion of said back panel less than the entire back panel, said front panel perforation extending from a termination adjacent said first seam to a termination adjacent said third seam and said back panel perforation extending from a termination adjacent said first seam to a termination adjacent said third seam; said front panel perforation first seam termination offset from said back panel perforation first seam termination and thereby defining a first terminus of a return envelope seal flap there between, said first side seam bonded to said back panel from said second side seam to said front panel perforation first seam and from said back panel perforation first seam to said pocket, and unbonded within said return envelope seal flap region; said front panel perforation third seam termination offset from said back panel perforation third seam termination and thereby defining a second terminus of a return envelope seal flap there between, said third side seam bonded to said back panel from said second side seam to said front panel perforation first seam and from said back panel perforation first seam to said pocket, and unbonded within said return envelope seal flap region; at least one of said perforations in each of said front panel and said back panel defining a third edge of said return envelope seal flap.