diff --git a/masque/pattern.py b/masque/pattern.py
index a63bb6d..fe75fb6 100644
--- a/masque/pattern.py
+++ b/masque/pattern.py
@@ -70,6 +70,15 @@ class Pattern:
 
         self.name = name
 
+    def  __deepcopy__(self, memo: Dict = None) -> 'Pattern':
+        memo = {} if memo is None else memo
+        new = copy.copy(self)
+        new.name = self.name
+        new.shapes = copy.deepcopy(self.shapes, memo)
+        new.labels = copy.deepcopy(self.labels, memo)
+        new.subpatterns = copy.deepcopy(self.subpatterns, memo)
+        return new
+
     def append(self, other_pattern: 'Pattern') -> 'Pattern':
         """
         Appends all shapes, labels and subpatterns from other_pattern to self's shapes,
diff --git a/masque/repetition.py b/masque/repetition.py
index 2d153e3..efa91a7 100644
--- a/masque/repetition.py
+++ b/masque/repetition.py
@@ -3,7 +3,7 @@
      instances of a Pattern in the same parent Pattern.
 """
 
-from typing import Union, List
+from typing import Union, List, Dict
 import copy
 
 import numpy
@@ -86,6 +86,16 @@ class GridRepetition:
             mirrored = [False, False]
         self.mirrored = mirrored
 
+    def  __deepcopy__(self, memo: Dict = None) -> 'GridReptition':
+        memo = {} if memo is None else memo
+        new = copy.copy(self)
+        new.pattern = copy.deepcopy(self.pattern, memo)
+        new._offset = self._offset.copy()
+        new._mirrored = copy.deepcopy(self._mirrored, memo)
+        new._a_vector = self._a_vector.copy()
+        new._b_vector = copy.copy(self._b_vector)       # ndarray or None so don't need deepcopy
+        return new
+
     # offset property
     @property
     def offset(self) -> numpy.ndarray:
diff --git a/masque/shapes/arc.py b/masque/shapes/arc.py
index bb2da3a..ee6bf15 100644
--- a/masque/shapes/arc.py
+++ b/masque/shapes/arc.py
@@ -1,4 +1,4 @@
-from typing import List, Tuple
+from typing import List, Tuple, Dict
 import math
 import numpy
 from numpy import pi
@@ -159,6 +159,14 @@ class Arc(Shape):
         self.poly_num_points = poly_num_points
         self.poly_max_arclen = poly_max_arclen
 
+    def  __deepcopy__(self, memo: Dict = None) -> 'Arc':
+        memo = {} if memo is None else memo
+        new = copy.copy(self)
+        new._offset = self._offset.copy()
+        new._radii = self._radii.copy()
+        new._angles = self._angles.copy()
+        return new
+
     def to_polygons(self, poly_num_points: int=None, poly_max_arclen: float=None) -> List[Polygon]:
         if poly_num_points is None:
             poly_num_points = self.poly_num_points
diff --git a/masque/shapes/circle.py b/masque/shapes/circle.py
index 489a608..785a382 100644
--- a/masque/shapes/circle.py
+++ b/masque/shapes/circle.py
@@ -1,4 +1,4 @@
-from typing import List
+from typing import List, Dict
 import numpy
 from numpy import pi
 
@@ -53,6 +53,12 @@ class Circle(Shape):
         self.poly_num_points = poly_num_points
         self.poly_max_arclen = poly_max_arclen
 
+    def  __deepcopy__(self, memo: Dict = None) -> 'Circle':
+        memo = {} if memo is None else memo
+        new = copy.copy(self)
+        new._offset = self._offset.copy()
+        return new
+
     def to_polygons(self, poly_num_points: int=None, poly_max_arclen: float=None) -> List[Polygon]:
         if poly_num_points is None:
             poly_num_points = self.poly_num_points
diff --git a/masque/shapes/ellipse.py b/masque/shapes/ellipse.py
index 724c11d..7064bd5 100644
--- a/masque/shapes/ellipse.py
+++ b/masque/shapes/ellipse.py
@@ -1,4 +1,4 @@
-from typing import List, Tuple
+from typing import List, Tuple, Dict
 import math
 import numpy
 from numpy import pi
@@ -98,6 +98,13 @@ class Ellipse(Shape):
         self.poly_num_points = poly_num_points
         self.poly_max_arclen = poly_max_arclen
 
+    def  __deepcopy__(self, memo: Dict = None) -> 'Ellipse':
+        memo = {} if memo is None else memo
+        new = copy.copy(self)
+        new._offset = self._offset.copy()
+        new._radii = self._radii.copy()
+        return new
+
     def to_polygons(self,
                     poly_num_points: int=None,
                     poly_max_arclen: float=None
diff --git a/masque/shapes/path.py b/masque/shapes/path.py
index 8edcf21..a09bae1 100644
--- a/masque/shapes/path.py
+++ b/masque/shapes/path.py
@@ -1,4 +1,4 @@
-from typing import List, Tuple
+from typing import List, Tuple, Dict
 import copy
 from enum import Enum
 import numpy
@@ -162,6 +162,15 @@ class Path(Shape):
         self.rotate(rotation)
         [self.mirror(a) for a, do in enumerate(mirrored) if do]
 
+    def  __deepcopy__(self, memo: Dict = None) -> 'Path':
+        memo = {} if memo is None else memo
+        new = copy.copy(self)
+        new._offset = self._offset.copy()
+        new._vertices = self._vertices.copy()
+        new._cap = copy.deepcopy(self._cap, memo)
+        new._cap_extensions = copy.deepcopy(self._cap_extensions, memo)
+        return new
+
     @staticmethod
     def travel(travel_pairs: Tuple[Tuple[float, float]],
                width: float = 0.0,
diff --git a/masque/shapes/polygon.py b/masque/shapes/polygon.py
index afb47a6..403689c 100644
--- a/masque/shapes/polygon.py
+++ b/masque/shapes/polygon.py
@@ -1,4 +1,4 @@
-from typing import List, Tuple
+from typing import List, Tuple, Dict
 import copy
 import numpy
 from numpy import pi
@@ -84,6 +84,13 @@ class Polygon(Shape):
         self.rotate(rotation)
         [self.mirror(a) for a, do in enumerate(mirrored) if do]
 
+    def  __deepcopy__(self, memo: Dict = None) -> 'Polygon':
+        memo = {} if memo is None else memo
+        new = copy.copy(self)
+        new._offset = self._offset.copy()
+        new._vertices = self._vertices.copy()
+        return new
+
     @staticmethod
     def square(side_length: float,
                rotation: float=0.0,
diff --git a/masque/shapes/text.py b/masque/shapes/text.py
index 8da2a65..d265d64 100644
--- a/masque/shapes/text.py
+++ b/masque/shapes/text.py
@@ -1,4 +1,5 @@
-from typing import List, Tuple
+from typing import List, Tuple, Dict
+import copy
 import numpy
 from numpy import pi, inf
 
@@ -81,6 +82,13 @@ class Text(Shape):
         self.font_path = font_path
         self.mirrored = mirrored
 
+    def  __deepcopy__(self, memo: Dict = None) -> 'Text':
+        memo = {} if memo is None else memo
+        new = copy.copy(self)
+        new._offset = self._offset.copy()
+        new._mirrored = copy.deepcopy(self._mirrored, memo)
+        return new
+
     def to_polygons(self,
                     _poly_num_points: int=None,
                     _poly_max_arclen: float=None
diff --git a/masque/subpattern.py b/masque/subpattern.py
index 0415894..88fe2ee 100644
--- a/masque/subpattern.py
+++ b/masque/subpattern.py
@@ -3,7 +3,7 @@
   offset, rotation, scaling, and other such properties to the reference.
 """
 
-from typing import Union, List
+from typing import Union, List, Dict
 import copy
 
 import numpy
@@ -45,6 +45,14 @@ class SubPattern:
             mirrored = [False, False]
         self.mirrored = mirrored
 
+    def  __deepcopy__(self, memo: Dict = None) -> 'SubPattern':
+        memo = {} if memo is None else memo
+        new = copy.copy(self)
+        new.pattern = copy.deepcopy(self.pattern, memo)
+        new._offset = self._offset.copy()
+        new._mirrored = copy.deepcopy(self._mirrored, memo)
+        return new
+
     # offset property
     @property
     def offset(self) -> numpy.ndarray: